The Washer,flat, cataloged under National Stock Number 5310-01-388-7010, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-388-7010 |
| Primary Part Number | 12931841 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Material Document and Classification | ASTM-A-576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM-A-108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | WHITE BODY |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 5147H OR STEEL COMP 1025 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.279 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN |
| Thickness | 0.250 INCHES NOMINAL 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 |
|---|---|
| 12931841 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| Reference | Meaning |
|---|---|
| 12931841 | 5/9 Secondary reference General Dynamics Land Systems Inc. |
NSN 5310-01-388-7010 is a Washer,flat, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-388-7010 has 1 manufacturer part number on file: 12931841 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 12931841: Overall Diameter: 1.000 INCHES NOMINAL IN; Material Document and Classification: ASTM-A-576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM-A-108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Color: WHITE BODY. 9 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.