The Washer,flat, cataloged under National Stock Number 5310-01-707-0236, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-707-0236 |
| Primary Part Number | 8408775-054 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS B633 TYPE V OR VI,SC3. POST COATING HEAT TREATMENT IAW ASTM B850,TABLE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.995 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS 6350 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.516 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN |
| Thickness | 0.105 INCHES MINIMUM AND 0.113 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 |
| Part Number | Manufacturer |
|---|---|
| 8408775-054 PRIMARY | Naval Sea Systems Command (USA) |
| 8408775 | Weiss-Aug Co Inc Dba Weiss-Aug Co Inc (USA) |
| 8408775 | Imperial Machine & Tool Co (USA) |
| 8408775 | Jaktool Llc (USA) |
| Reference | Meaning |
|---|---|
| 8408775 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5310-01-707-0236 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-707-0236 has 4 manufacturer part numbers on file: 8408775-054 (Naval Sea Systems Command), 8408775 (Weiss-Aug Co Inc Dba Weiss-Aug Co Inc), 8408775 (Imperial Machine & Tool Co), 8408775 (Jaktool Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-709-1711. Verify interchangeability with system specifications before substitution.
Key specifications for 8408775-054: Surface Treatment Document and Classification: AMS B633 TYPE V OR VI,SC3. POST COATING HEAT TREATMENT IAW ASTM B850,TABLE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.995 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Material Document and Classification: AMS 6350 NATIONAL STD/SPEC 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.