The Washer,flat, cataloged under National Stock Number 5310-01-128-5152, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is American Turbo Systems Inc. Government technical data includes 10 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. 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 | 5310-01-128-5152 |
| Primary Part Number | 100693 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | American Turbo Systems Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 TYPE 6 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Material Document and Classification | AISI 304 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 321 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 304 OR STEEL COMP 321 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.481 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN |
| Thickness | 0.080 INCHES MINIMUM AND 0.082 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 |
|---|---|
| 100693 PRIMARY | American Turbo Systems Inc (USA) |
NSN 5310-01-128-5152 is a Washer,flat, manufactured by American Turbo Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-128-5152 has 1 manufacturer part number on file: 100693 (American Turbo Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 3950-01-364-5596. Verify interchangeability with system specifications before substitution.
Key specifications for 100693: Surface Treatment Document and Classification: QQ-P-35 TYPE 6 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Material Document and Classification: AISI 304 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 321 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.