The Washer,flat, cataloged under National Stock Number 5310-01-170-6263, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk. Government technical data includes 11 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 | 5310-01-170-6263 |
| Primary Part Number | RA18171 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk |
| Status | ACTIVE |
| Surface Treatment Document and Classification | RAS 106/1,FSCM K0654 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.430 INCHES NOMINAL IN |
| Heat Treatment | HARDENED AND TEMPERED OR COLD ROLLED AND TEMPERED |
| Material Document and Classification | S.514,BSI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Thickness | 0.018 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 |
|---|---|
| RA18171 PRIMARY | Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk (GBR) |
NSN 5310-01-170-6263 is a Washer,flat, manufactured by Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-170-6263 has 1 manufacturer part number on file: RA18171 (Safran Landing Systems Uk Ltd Div Safran Landing Systems Uk).
Key specifications for RA18171: Surface Treatment Document and Classification: RAS 106/1,FSCM K0654 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.430 INCHES NOMINAL IN; Heat Treatment: HARDENED AND TEMPERED OR COLD ROLLED AND TEMPERED; Material Document and Classification: S.514,BSI ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.