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National Stock Number:
3120-01-120-0997
Federal Supply Class:
3120
National Item Identification Number:
011200997
Description:
ROLLER,LINEAR-ROTARY MOTION
Detail:
A cylindrical body having a centrally located hole to accommodate a pin or shaft for attachment to a push rod guide, yoke, rocker arm, turntable, or rail. The item provides a rolling contact with the face of a valve stem, or the lobes of a cam ring or camshaft on engines, fuel injection pumps, latches, turntables, parallel bearing surfaces requiring a roller support, and the like. Excludes BEARING, ROLLER, CYLINDRICAL; ROLLER, ELECTRICAL SWITCH; and friction bearings. See also CAM FOLLOWER, NEEDLE BEARING.
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Manufacturer Information:
| 10107759 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 196B7504 | 05606 | GENERAL DYNAMICS-OTS, INC. |
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Techincal Specification:
| BORE INSIDE DIAMETER | 0.301 INCHES MINIMUM AND 0.303 INCHES MAXIMUM | | CASEHARDENING INDICATOR | NOT CASEHARDENED | | CHAMFER/RADIUS OF OUTSIDE CORNER | 0.020 IN. MIN,0.040 IN. MAX RADIUS | | COUNTERBORE DIAMETER | 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM | | COUNTERBORE DEPTH | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM | | FACE WIDTH | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A331, COMP 4140 OR COMP 41L40 ASSN STD ALL MATERIAL RESPONSES OR ASTM A322, COMP 4140 OR COMP 41L40 ASSN STD ALL MATERIAL RESPONSES | | MATERIAL | STEEL COMP 4140 OR STEEL COMP 41L45 | | METALLIC HARDNESS RATING | 33.0 MINIMUM ROCKWELL C AND 38.0 MAXIMUM ROCKWELL C | | OUTSIDE DIAMETER | 0.498 INCHES MINIMUM AND 0.502 INCHES MAXIMUM | | SPECIAL FEATURES | BORE INSIDE DIAMETER RELIEVED TO 0.321 IN. MIN,0.343 IN. MAX DIA BY 0.010 IN. MIN,0.020 IN. MAX LENGTH | | STYLE DESIGNATOR | PLAIN, COUNTERBORED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232,TYPE M,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OR DOD-P-16232,TYPE Z,CLASS 1 MIL SPEC 2ND TREATMENT RESPONSE | | SURFACE TREATMENT | PHOSPHATE MANGANESE OR PHOSPHATE ZINC |
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