The Washer,convex, cataloged under National Stock Number 5310-01-331-7229, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Assembled and Machine Products Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-331-7229 |
| Primary Part Number | 6450 D8 |
| Item Name | Washer,convex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Assembled and Machine Products Inc |
| Status | ACTIVE |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM |
| Style Designator | CONVEX |
| Material Document and Classification | AISI 86L20 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.000 INCHES MAXIMUM IN |
| Material Thickness | 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.452 INCHES MINIMUM AND 0.460 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 |
|---|---|
| 6450 D8 PRIMARY | Assembled and Machine Products Inc (USA) |
| 12361752 | Amz Alabama Inc. (USA) |
| 12361752 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12361752 | 7/2 Vendor item drawing reference Bae Systems Land & Armaments L.p. |
NSN 5310-01-331-7229 is a Washer,convex, manufactured by Assembled and Machine Products Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-331-7229 has 3 manufacturer part numbers on file: 6450 D8 (Assembled and Machine Products Inc), 12361752 (Amz Alabama Inc.), 12361752 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 6450 D8: Hardness Rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM; Style Designator: CONVEX; Material Document and Classification: AISI 86L20 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.000 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.