| Item Name | Washer Spring Tension |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-276-3344 (012763344) |
| NCB Code | USA (01) |
| Manufacturer | Air Log Ltd, British Standards Institution, Military Specifications |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 3-4819-8-412-52 | air log ltd | washer spring tension | k4340 | RFQ |
| BS SP 134-C | british standards institution | washer spring tension | k7766 | RFQ |
| M12133/3-176 | military specifications | washer spring tension | 81349 | RFQ |
| MIL-W-12133/3 | military specifications | washer spring tension | 81349 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.176 INCHES MINIMUM AND 0.181 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.340 INCHES MINIMUM AND 0.345 INCHES MAXIMUM |
| ABKW | OVERALL HEIGHT | 0.027 INCHES MINIMUM AND 0.033 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.010 INCHES MINIMUM AND 0.012 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 350.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 380.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM |
| MATT | MATERIAL | COPPER ALLOY 172 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B194,1/4 HARD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Relevant Components for NSN - 5310-01-276-3344, 5310012763344 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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