The Washer,lock, cataloged under National Stock Number 5310-01-112-7944, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-112-7944 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-Z-325,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Heat Treatment | QUENCHED AND TEMPERED |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.873 INCHES MAXIMUM IN |
| Material Thickness | 0.125 INCHES MINIMUM IN |
| Nondefinitive Spec/std Data | A CLASS AND 2 STYLE |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL |
| Hole Diameter | 0.509 INCHES MINIMUM AND 0.523 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 |
|---|---|
| 981423 ITEM 3 | 5/9 Secondary reference Warn Industries Inc |
| 980226 ARTICLE 2596 | 5/9 Secondary reference Warn Industries Inc |
| 02596 | 5/9 Secondary reference Warn Industries, Inc. Dba Warn Div Warn Industries |
| FF-W-84 | 4/1 Identification reference U.S. Government activity |
| 02596 | 5/9 Secondary reference Warn Industries Inc |
| 980226 ARTICLE 2596 | 3/9 Design control — primary reference Warn Industries, Inc. Dba Warn Div Warn Industries |
| 2596 | 5/9 Secondary reference Warn Industries Inc |
| 2003W | 5/9 Secondary reference Lake Region Development Co Inc Bradford Machine Tool Div |
| 2596 | 5/9 Secondary reference Warn Industries, Inc. Dba Warn Div Warn Industries |
| 981423 ITEM 3 | 5/9 Secondary reference Warn Industries, Inc. Dba Warn Div Warn Industries |
NSN 5310-01-112-7944 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5945-01-114-3277, 6750-01-382-0307. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-112-7944: Surface Treatment Document and Classification: QQ-Z-325,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Heat Treatment: QUENCHED AND TEMPERED; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND. 11 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.