The Washer,flat, cataloged under National Stock Number 5310-00-882-7121, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-882-7121 |
| Primary Part Number | 10908633 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES BOTTOM |
| Surface Finish | 63.0 MICROINCHES TOP |
| Surface Treatment Document and Classification | MIL-P-16232,TY M,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.880 INCHES NOMINAL IN |
| Heat Treatment | QUENCHED AND TEMPERED |
| Hardness Rating | 89.3 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 92.2 ROCKWELL SUPERFICIAL 15-N MAXIMUM |
| Material Document and Classification | QQ-T-830 FED SPEC 1ST MATERIAL RESPONSE AND QQ-T-830 FED SPEC 2ND MATERIAL RESPONSE AND QQ-T-830 FED SPEC 3RD MATERIAL RESPONSE AND QQ-T-830 FED SPEC 4TH MATERIAL RESPONSE AND QQ-T-830 FED SPEC 5TH MATERIAL RESPONSE AND QQ-S-698 FED SPEC 6TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Features Provided | CASEHARDENED |
| Surface Treatment | PHOSPHATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP MT1010 OR STEEL COMP MT1015 OR STEEL COMP MT1020 OR STEEL COMP MTX1015 OR STEEL COMP MTX1020 OR STEEL COMP 1020 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.260 INCHES NOMINAL IN |
| Thickness | 0.095 INCHES MINIMUM AND 0.105 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 |
|---|---|
| 10908633 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5310008827121 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5310-00-882-7121 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 5310-00-882-7121 has 1 manufacturer part number on file: 10908633 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10908633: Surface Finish: 63.0 MICROINCHES BOTTOM; Surface Finish: 63.0 MICROINCHES TOP; Surface Treatment Document and Classification: MIL-P-16232,TY M,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.880 INCHES NOMINAL IN. 15 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.