My Quote Request
3110-00-225-6604
20 Products
139479-01
BEARING,BALL,ANNULAR
NSN, MFG P/N
3110002256604
NSN
3110-00-225-6604
MFG
GE AVIATION SYSTEMS LLC
Description
BORE DIAMETER: 0.4098 INCHES MINIMUM AND 0.4100 INCHES MAXIMUM
BORE SHAPE: STRAIGHT
INTERNAL FIT-UP DESIGNATION: STANDARD
LOAD DIRECTION: RADIAL
MATERIAL: STEEL OVERALL
OVERALL OUTSIDE DIAMETER: 0.8748 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM
OVERALL WIDTH: 0.2178 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM
RETAINER FABRICATION METHOD: PRESSED
STANDARD TOLERANCE DESIGNATION: ABEC NO.5
STYLE DESIGNATOR: 10A NON-LOADING GROOVE, NON-SEPARABLE
SURFACE FINISH: GROUND
Related Searches:
AD35526
BEARING,ROLLER,NEEDLE
NSN, MFG P/N
3110002252896
NSN
3110-00-225-2896
MFG
RBC AIRCRAFT PRODUCTS INC.
Description
ALIGNMENT TYPE: SELF-ALIGNING
BORE DIAMETER: 0.4993 INCHES MINIMUM AND 0.4997 INCHES MAXIMUM
FEATURES PROVIDED: ALIGNING RING
INNER RING WIDTH: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM
LUBRICATION MATERIAL: GREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MANUFACTURERS CODE: 80378
MATERIAL: STEEL OVERALL
MFR SOURCE CONTROLLING REFERENCE: 215-82406-1
OUTER RING WIDTH: 0.6510 INCHES MINIMUM AND 0.6560 INCHES MAXIMUM
OVERALL OUTSIDE DIAMETER: 1.4995 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM
RETAINER FABRICATION METHOD: PRESSED
SELF-ALIGNMENT LOCATION: INTERNAL
SPEC/STD CONTROLLING DATA:
SPECIAL FEATURES: OIL HOLE AND GROOVE IN INNER RING,OUTER RING AND ALIGNING RING ALSO 0.0002 IN. MIN 0.0014 IN. MAX RADIAL CLEARANCE IN A 1.4991 IN. RING GAGE
STYLE DESIGNATOR: 438 AIRFRAME, HARDENED AND GROUND, NON-SEPARABLE
SURFACE FINISH: GROUND
SURFACE TREATMENT: CADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE EXPOSED SURFACES AS MOUNTED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE EXPOSED SURFACES AS MOUNTED
Related Searches:
AD35526
BEARING,ROLLER,NEEDLE
NSN, MFG P/N
3110002252896
NSN
3110-00-225-2896
MFG
TIMKEN AEROSPACE INC DBA TORRINGTON PRODUCT
Description
ALIGNMENT TYPE: SELF-ALIGNING
BORE DIAMETER: 0.4993 INCHES MINIMUM AND 0.4997 INCHES MAXIMUM
FEATURES PROVIDED: ALIGNING RING
INNER RING WIDTH: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM
LUBRICATION MATERIAL: GREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MANUFACTURERS CODE: 80378
MATERIAL: STEEL OVERALL
MFR SOURCE CONTROLLING REFERENCE: 215-82406-1
OUTER RING WIDTH: 0.6510 INCHES MINIMUM AND 0.6560 INCHES MAXIMUM
OVERALL OUTSIDE DIAMETER: 1.4995 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM
RETAINER FABRICATION METHOD: PRESSED
SELF-ALIGNMENT LOCATION: INTERNAL
SPEC/STD CONTROLLING DATA:
SPECIAL FEATURES: OIL HOLE AND GROOVE IN INNER RING,OUTER RING AND ALIGNING RING ALSO 0.0002 IN. MIN 0.0014 IN. MAX RADIAL CLEARANCE IN A 1.4991 IN. RING GAGE
STYLE DESIGNATOR: 438 AIRFRAME, HARDENED AND GROUND, NON-SEPARABLE
SURFACE FINISH: GROUND
SURFACE TREATMENT: CADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE EXPOSED SURFACES AS MOUNTED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE EXPOSED SURFACES AS MOUNTED
Related Searches:
16641
BEARING,BALL,THRUST
NSN, MFG P/N
3110002252987
NSN
3110-00-225-2987
MFG
DELAVAN INC DBA TURBINE FUEL TECHNOLOGIES
Description
ALIGNMENT TYPE: RIGID
MATERIAL: STEEL OVERALL
OVERALL HEIGHT: 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM
OVERALL OUTSIDE DIAMETER: 0.9970 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM
SPECIAL FEATURES: SOLID THRUST 4ASHERS GROOVED,BALLS AND THRUST WASHERS HELD TOGETHER BY A CENTER PIN
SURFACE FINISH: GROUND
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
Related Searches:
T114RG1000
BEARING,BALL,THRUST
NSN, MFG P/N
3110002252987
NSN
3110-00-225-2987
MFG
KNOWLTON M D CO AUBURN BALL BEARING DIV
Description
ALIGNMENT TYPE: RIGID
MATERIAL: STEEL OVERALL
OVERALL HEIGHT: 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM
OVERALL OUTSIDE DIAMETER: 0.9970 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM
SPECIAL FEATURES: SOLID THRUST 4ASHERS GROOVED,BALLS AND THRUST WASHERS HELD TOGETHER BY A CENTER PIN
SURFACE FINISH: GROUND
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
Related Searches:
X3020000
BEARING,BALL,THRUST
NSN, MFG P/N
3110002252987
NSN
3110-00-225-2987
MFG
ABC ACQUISITION COMPANY DBA AETNA BEARING COMPANY
Description
ALIGNMENT TYPE: RIGID
MATERIAL: STEEL OVERALL
OVERALL HEIGHT: 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM
OVERALL OUTSIDE DIAMETER: 0.9970 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM
SPECIAL FEATURES: SOLID THRUST 4ASHERS GROOVED,BALLS AND THRUST WASHERS HELD TOGETHER BY A CENTER PIN
SURFACE FINISH: GROUND
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
Related Searches:
323W266A
BEARING,ROLLER,TAPERED
NSN, MFG P/N
3110002253063
NSN
3110-00-225-3063
MFG
PT COMPONENTS INC DRIVE DIV
Description
BACKFACE CORNER RADIUS: 0.1000 INCHES NOMINAL
BORE DIAMETER: 1.9680 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM
CONE CORNER RADIUS: 0.1200 INCHES NOMINAL
CONE WIDTH: 36.0 MILLIMETERS NOMINAL
CUP WIDTH: 29.0 MILLIMETERS NOMINAL
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: DS3225-3
MANUFACTURERS CODE: 96906
MATERIAL: STEEL OVERALL
OVERALL OUTSIDE DIAMETER: 4.1333 INCHES MINIMUM AND 4.1339 INCHES MAXIMUM
OVERALL WIDTH: 37.0 MILLIMETERS NOMINAL
RETAINER FABRICATION METHOD: PRESSED
SPEC/STD CONTROLLING DATA:
SPECIAL FEATURES: DUTY CLASS JHM SERIES
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 3
STANDOUT WIDTH: 8.0 MILLIMETERS NOMINAL
STYLE DESIGNATOR: 350 STRAIGHT BORE, NORMAL ANGLE
Related Searches:
602-175
BEARING,ROLLER,TAPERED
NSN, MFG P/N
3110002253063
NSN
3110-00-225-3063
MFG
AMARILLO GEAR CO
Description
BACKFACE CORNER RADIUS: 0.1000 INCHES NOMINAL
BORE DIAMETER: 1.9680 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM
CONE CORNER RADIUS: 0.1200 INCHES NOMINAL
CONE WIDTH: 36.0 MILLIMETERS NOMINAL
CUP WIDTH: 29.0 MILLIMETERS NOMINAL
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: DS3225-3
MANUFACTURERS CODE: 96906
MATERIAL: STEEL OVERALL
OVERALL OUTSIDE DIAMETER: 4.1333 INCHES MINIMUM AND 4.1339 INCHES MAXIMUM
OVERALL WIDTH: 37.0 MILLIMETERS NOMINAL
RETAINER FABRICATION METHOD: PRESSED
SPEC/STD CONTROLLING DATA:
SPECIAL FEATURES: DUTY CLASS JHM SERIES
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 3
STANDOUT WIDTH: 8.0 MILLIMETERS NOMINAL
STYLE DESIGNATOR: 350 STRAIGHT BORE, NORMAL ANGLE
Related Searches:
DS3225-3
BEARING,ROLLER,TAPERED
NSN, MFG P/N
3110002253063
NSN
3110-00-225-3063
MFG
MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
Description
BACKFACE CORNER RADIUS: 0.1000 INCHES NOMINAL
BORE DIAMETER: 1.9680 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM
CONE CORNER RADIUS: 0.1200 INCHES NOMINAL
CONE WIDTH: 36.0 MILLIMETERS NOMINAL
CUP WIDTH: 29.0 MILLIMETERS NOMINAL
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: DS3225-3
MANUFACTURERS CODE: 96906
MATERIAL: STEEL OVERALL
OVERALL OUTSIDE DIAMETER: 4.1333 INCHES MINIMUM AND 4.1339 INCHES MAXIMUM
OVERALL WIDTH: 37.0 MILLIMETERS NOMINAL
RETAINER FABRICATION METHOD: PRESSED
SPEC/STD CONTROLLING DATA:
SPECIAL FEATURES: DUTY CLASS JHM SERIES
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 3
STANDOUT WIDTH: 8.0 MILLIMETERS NOMINAL
STYLE DESIGNATOR: 350 STRAIGHT BORE, NORMAL ANGLE
Related Searches:
JHM807045JHM807012
BEARING,ROLLER,TAPERED
NSN, MFG P/N
3110002253063
NSN
3110-00-225-3063
JHM807045JHM807012
BEARING,ROLLER,TAPERED
NSN, MFG P/N
3110002253063
NSN
3110-00-225-3063
MFG
THE TIMKEN CORPORATION
Description
BACKFACE CORNER RADIUS: 0.1000 INCHES NOMINAL
BORE DIAMETER: 1.9680 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM
CONE CORNER RADIUS: 0.1200 INCHES NOMINAL
CONE WIDTH: 36.0 MILLIMETERS NOMINAL
CUP WIDTH: 29.0 MILLIMETERS NOMINAL
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE: DS3225-3
MANUFACTURERS CODE: 96906
MATERIAL: STEEL OVERALL
OVERALL OUTSIDE DIAMETER: 4.1333 INCHES MINIMUM AND 4.1339 INCHES MAXIMUM
OVERALL WIDTH: 37.0 MILLIMETERS NOMINAL
RETAINER FABRICATION METHOD: PRESSED
SPEC/STD CONTROLLING DATA:
SPECIAL FEATURES: DUTY CLASS JHM SERIES
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 3
STANDOUT WIDTH: 8.0 MILLIMETERS NOMINAL
STYLE DESIGNATOR: 350 STRAIGHT BORE, NORMAL ANGLE
Related Searches:
79407000302
BEARING,JEWEL
NSN, MFG P/N
3110002253861
NSN
3110-00-225-3861
MFG
KOLLSMAN INC.
Description
DESIGN CONTROL REFERENCE: 79407000302
GENERAL CHARACTERISTICS ITEM DESCRIPTION: BRASS,0.124 IN. OD,0.025 IN. MIN,0.035 IN. MAX IN. ID,0.140 IN. LG
MANUFACTURERS CODE: 89944
THE MANUFACTURERS DATA:
Related Searches:
302MR092
BEARING,BALL,AIRFRAME
NSN, MFG P/N
3110002254527
NSN
3110-00-225-4527
MFG
RAYTHEON COMPANY DBA RAYTHEON
Description
BEARING SEAL TYPE: CONTACT
BORE DIAMETER: 2.3120 INCHES NOMINAL
DESIGN CONTROL REFERENCE: 302MR092P001
INNER RING WIDTH: 0.4370 INCHES NOMINAL
LOAD DIRECTION: RADIAL
LUBRICATION MATERIAL: GREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MANUFACTURERS CODE: 3B150
MATERIAL: STEEL BALL STEEL INNER RING STEEL OUTER RING RUBBER SYNTHETIC SEAL
OUTER RING WIDTH: 0.3750 INCHES NOMINAL
OVERALL OUTSIDE DIAMETER: 3.0625 INCHES NOMINAL
SEAL QUANTITY: 2
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR AIRFRAME NEEDLE BEARINGS
STYLE DESIGNATOR: 196 SINGLE ROW INNER RING EXTENDED BOTH SIDES
SURFACE TREATMENT: CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
THE MANUFACTURERS DATA:
Related Searches:
302MR092P001
BEARING,BALL,AIRFRAME
NSN, MFG P/N
3110002254527
NSN
3110-00-225-4527
MFG
RAYTHEON TECHNICAL SERVICES COMPANY LLC DBA RAYTHEON
Description
BEARING SEAL TYPE: CONTACT
BORE DIAMETER: 2.3120 INCHES NOMINAL
DESIGN CONTROL REFERENCE: 302MR092P001
INNER RING WIDTH: 0.4370 INCHES NOMINAL
LOAD DIRECTION: RADIAL
LUBRICATION MATERIAL: GREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MANUFACTURERS CODE: 3B150
MATERIAL: STEEL BALL STEEL INNER RING STEEL OUTER RING RUBBER SYNTHETIC SEAL
OUTER RING WIDTH: 0.3750 INCHES NOMINAL
OVERALL OUTSIDE DIAMETER: 3.0625 INCHES NOMINAL
SEAL QUANTITY: 2
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR AIRFRAME NEEDLE BEARINGS
STYLE DESIGNATOR: 196 SINGLE ROW INNER RING EXTENDED BOTH SIDES
SURFACE TREATMENT: CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
THE MANUFACTURERS DATA:
Related Searches:
302MR092P001
BEARING,BALL,AIRFRAME
NSN, MFG P/N
3110002254527
NSN
3110-00-225-4527
MFG
RAYTHEON CO MISSILE SYSTEMS DIV LOWELL PLANT
Description
BEARING SEAL TYPE: CONTACT
BORE DIAMETER: 2.3120 INCHES NOMINAL
DESIGN CONTROL REFERENCE: 302MR092P001
INNER RING WIDTH: 0.4370 INCHES NOMINAL
LOAD DIRECTION: RADIAL
LUBRICATION MATERIAL: GREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MANUFACTURERS CODE: 3B150
MATERIAL: STEEL BALL STEEL INNER RING STEEL OUTER RING RUBBER SYNTHETIC SEAL
OUTER RING WIDTH: 0.3750 INCHES NOMINAL
OVERALL OUTSIDE DIAMETER: 3.0625 INCHES NOMINAL
SEAL QUANTITY: 2
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR AIRFRAME NEEDLE BEARINGS
STYLE DESIGNATOR: 196 SINGLE ROW INNER RING EXTENDED BOTH SIDES
SURFACE TREATMENT: CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
THE MANUFACTURERS DATA:
Related Searches:
302MR092P001
BEARING,BALL,AIRFRAME
NSN, MFG P/N
3110002254527
NSN
3110-00-225-4527
MFG
RAYTHEON COMPANY DBA RAYTHEON
Description
BEARING SEAL TYPE: CONTACT
BORE DIAMETER: 2.3120 INCHES NOMINAL
DESIGN CONTROL REFERENCE: 302MR092P001
INNER RING WIDTH: 0.4370 INCHES NOMINAL
LOAD DIRECTION: RADIAL
LUBRICATION MATERIAL: GREASE
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MANUFACTURERS CODE: 3B150
MATERIAL: STEEL BALL STEEL INNER RING STEEL OUTER RING RUBBER SYNTHETIC SEAL
OUTER RING WIDTH: 0.3750 INCHES NOMINAL
OVERALL OUTSIDE DIAMETER: 3.0625 INCHES NOMINAL
SEAL QUANTITY: 2
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR AIRFRAME NEEDLE BEARINGS
STYLE DESIGNATOR: 196 SINGLE ROW INNER RING EXTENDED BOTH SIDES
SURFACE TREATMENT: CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
THE MANUFACTURERS DATA:
Related Searches:
1638NS
BEARING,BALL,ANNULAR
NSN, MFG P/N
3110002256062
NSN
3110-00-225-6062
MFG
SKF INDUSTRIES INC NICE BEARING PRODUCTS DIV
Description
ALIGNMENT TYPE: RIGID
BORE DIAMETER: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM
BORE SHAPE: STRAIGHT
INTERNAL FIT-UP DESIGNATION: STANDARD
LOAD DIRECTION: RADIAL
MATERIAL: STEEL BALL STEEL INNER RING STEEL OUTER RING
OVERALL OUTSIDE DIAMETER: 1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM
OVERALL WIDTH: 0.5575 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM
RETAINER FABRICATION METHOD: MOLDED
SHIELD QUANTITY: 2
STYLE DESIGNATOR: 10A NON-LOADING GROOVE, NON-SEPARABLE
SURFACE FINISH: UNGROUND
Related Searches:
1638NS
BEARING,BALL,ANNULAR
NSN, MFG P/N
3110002256062
NSN
3110-00-225-6062
MFG
SKF USA INC.
Description
ALIGNMENT TYPE: RIGID
BORE DIAMETER: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM
BORE SHAPE: STRAIGHT
INTERNAL FIT-UP DESIGNATION: STANDARD
LOAD DIRECTION: RADIAL
MATERIAL: STEEL BALL STEEL INNER RING STEEL OUTER RING
OVERALL OUTSIDE DIAMETER: 1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM
OVERALL WIDTH: 0.5575 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM
RETAINER FABRICATION METHOD: MOLDED
SHIELD QUANTITY: 2
STYLE DESIGNATOR: 10A NON-LOADING GROOVE, NON-SEPARABLE
SURFACE FINISH: UNGROUND
Related Searches:
K-101
BEARING,BALL,ANNULAR
NSN, MFG P/N
3110002256062
NSN
3110-00-225-6062
MFG
K T S INDUSTRIES INC
Description
ALIGNMENT TYPE: RIGID
BORE DIAMETER: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM
BORE SHAPE: STRAIGHT
INTERNAL FIT-UP DESIGNATION: STANDARD
LOAD DIRECTION: RADIAL
MATERIAL: STEEL BALL STEEL INNER RING STEEL OUTER RING
OVERALL OUTSIDE DIAMETER: 1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM
OVERALL WIDTH: 0.5575 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM
RETAINER FABRICATION METHOD: MOLDED
SHIELD QUANTITY: 2
STYLE DESIGNATOR: 10A NON-LOADING GROOVE, NON-SEPARABLE
SURFACE FINISH: UNGROUND
Related Searches:
649510
CAM FOLLOWER,NEEDLE BEARING
NSN, MFG P/N
3110002256577
NSN
3110-00-225-6577
MFG
INTERNATIONAL BUSINESS MACHINES CORP
Description
DESIGN CONTROL REFERENCE: 649510
III END ITEM IDENTIFICATION: COMPUTER
MANUFACTURERS CODE: 89264
THE MANUFACTURERS DATA:
Related Searches:
139479-01
BEARING,BALL,ANNULAR
NSN, MFG P/N
3110002256604
NSN
3110-00-225-6604
MFG
TIMKEN AEROSPACE & SUPER PRECISION DBA TIMKEN SUPER PRECISION DIV TIMKEN SUPER PRECISION
Description
BORE DIAMETER: 0.4098 INCHES MINIMUM AND 0.4100 INCHES MAXIMUM
BORE SHAPE: STRAIGHT
INTERNAL FIT-UP DESIGNATION: STANDARD
LOAD DIRECTION: RADIAL
MATERIAL: STEEL OVERALL
OVERALL OUTSIDE DIAMETER: 0.8748 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM
OVERALL WIDTH: 0.2178 INCHES MINIMUM AND 0.2188 INCHES MAXIMUM
RETAINER FABRICATION METHOD: PRESSED
STANDARD TOLERANCE DESIGNATION: ABEC NO.5
STYLE DESIGNATOR: 10A NON-LOADING GROOVE, NON-SEPARABLE
SURFACE FINISH: GROUND