The Washer,lock, cataloged under National Stock Number 5310-01-502-3537, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-502-3537 |
| Primary Part Number | 91114A031 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Hardness Rating | 40.0 ROCKWELL C NOMINAL |
| Style Designator | FLAT EXTERNAL TEETH |
| Outside Diameter | 0.694 INCHES NOMINAL IN |
| Material Thickness | 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL COMP 1050 OR STEEL COMP 1075 OR STEEL COMP 1095 OVERALL |
| Hole Diameter | 0.384 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 91114A031 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5310-01-502-3537 is a Washer,lock, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-502-3537 has 1 manufacturer part number on file: 91114A031 (Mcmaster-Carr Supply Co).
Key specifications for 91114A031: Hardness Rating: 40.0 ROCKWELL C NOMINAL; Style Designator: FLAT EXTERNAL TEETH; Outside Diameter: 0.694 INCHES NOMINAL IN; Material Thickness: 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN. 7 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.