The Washer,lock, cataloged under National Stock Number 5310-00-010-6494, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-010-6494 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.209 INCHES MAXIMUM IN |
| Material Thickness | 0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 2 STYLE AND A CLASS |
| Material | STEEL OVERALL |
| Hole Diameter | 0.115 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 384 | 5/9 Secondary reference Walbro Corp Automotive Products Group |
| 105836-9 | C/1 Advisory reference — outside the item-of-supply concept L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products |
| MS35338-2 | 2/2 Government specification standardization U.S. Government activity |
| 106494 | 5/1 Secondary reference General Motors Corp |
| 0158110 | 5/9 Secondary reference Gulf and Western Mfg Co Eagle Signal Systems Div |
| 126761 | 5/9 Secondary reference Brockway Motor Trucks Div of Mack Trucks Inc |
| 106494 | 5/9 Secondary reference General Motors Corp Delco Products Div |
| Y6-4 | 5/1 Secondary reference Roller Bearing Co of America, Inc Div Pic Design |
| FFW84CLASSASTYLE2 | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-010-6494 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5962-00-239-2014, 3110-01-197-2650. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-010-6494: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.209 INCHES MAXIMUM IN. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.