The Washer,lock, cataloged under National Stock Number 5310-00-931-8716, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Voi-Shan Products. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-931-8716 |
| Primary Part Number | RLA27SM4-000 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Voi-Shan Products |
| Status | ACTIVE |
| Material Document and Classification | ASTM A582 COMP 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.452 INCHES NOMINAL IN |
| Shoulder Diameter | 0.400 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 303 OVERALL |
| 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 |
|---|---|
| RLA27SM4-000 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| Reference | Meaning |
|---|---|
| RLA27SM4-000 | 3/2 Design control — primary reference U.S. Government activity |
| 13026369 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
NSN 5310-00-931-8716 is a Washer,lock, manufactured by Howmet Global Fastening Systems Inc. Div Voi-Shan Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-931-8716 has 1 manufacturer part number on file: RLA27SM4-000 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products).
Key specifications for RLA27SM4-000: Material Document and Classification: ASTM A582 COMP 303 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.452 INCHES NOMINAL IN; Shoulder Diameter: 0.400 INCHES NOMINAL IN; Surface Treatment: PASSIVATE OVERALL. 5 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.