The Washer,flat, cataloged under National Stock Number 5310-00-409-1763, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mbda Uk Ltd. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-409-1763 |
| Primary Part Number | A05738 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mbda Uk Ltd |
| Status | CANCELLED |
| Surface Treatment Document and Classification | MIL-C-13924 CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Nondefinitive Spec/std Data | A TYPE AND 1 GRADE AND B CLASS |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE FILM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.151 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Thickness | 0.027 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A05738 | Mbda Uk Ltd (GBR) |
| WC1057-4 | Allmetal Screw Products Corp (USA) |
| GD01009155 | General Dynamics United Kingdom Ltd (GBR) |
| Reference | Meaning |
|---|---|
| FFW92 | 4/1 Identification reference U.S. Government activity |
| 10121371 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 5310004091763 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 410950-6 | 5/2 Secondary reference U.S. Government activity |
| MS15795-805B | 3/2 Design control — primary reference U.S. Government activity |
| MS15795-805B | 5/9 Secondary reference U.S. Government activity |
| MS15795-805X | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 150-0162-001 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5310-00-409-1763 is a Washer,flat, manufactured by Mbda Uk Ltd, classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-409-1763 has 3 manufacturer part numbers on file: A05738 (Mbda Uk Ltd), WC1057-4 (Allmetal Screw Products Corp), GD01009155 (General Dynamics United Kingdom Ltd).
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-782-7343, 5330-00-942-8308. Verify interchangeability with system specifications before substitution.
Key specifications for A05738: Surface Treatment Document and Classification: MIL-C-13924 CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 12 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.
NSN 5310-00-409-1763 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.