The Washer,flat, cataloged under National Stock Number 5310-01-129-6952, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-129-6952 |
| Primary Part Number | CA12031-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.280 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Thickness | 0.029 INCHES MINIMUM AND 0.035 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 |
|---|---|
| CA12031-3 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| 10109534 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| PC92023-2 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. Dba Rc Displays Systems |
NSN 5310-01-129-6952 is a Washer,flat, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-129-6952 has 1 manufacturer part number on file: CA12031-3 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for CA12031-3: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-766 FED SPEC 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.