The Washer,flat, cataloged under National Stock Number 5310-01-124-6538, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 8 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 | 5310-01-124-6538 |
| Primary Part Number | 11629663 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Overall Diameter | 0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Hardness Rating | 77.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 86.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1070 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.530 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN |
| Thickness | 0.014 INCHES MINIMUM AND 0.016 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 |
|---|---|
| 11629663 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-01-124-6538 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-124-6538 has 1 manufacturer part number on file: 11629663 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11629663: Overall Diameter: 0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN; Hardness Rating: 77.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 86.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM; Cross-Sectional Shape Style: RECTANGULAR; Special Features: USED ON 2520-01-089-5011. 8 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.