The Washer,key, cataloged under National Stock Number 5310-00-111-2106, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is D F P Manufacturing Corp Dba D F P. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-111-2106 |
| Primary Part Number | A51P21122-29 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | D F P Manufacturing Corp Dba D F P |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | QQ-A-250/4,T62 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | ANODIZE OVERALL |
| 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 |
|---|---|
| A51P21122-29 | D F P Manufacturing Corp Dba D F P (USA) |
| Reference | Meaning |
|---|---|
| A51P21122-29 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| A51P21122-29 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
| A51P21122-29 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 5310-00-111-2106 is a Washer,key, manufactured by D F P Manufacturing Corp Dba D F P, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-111-2106 has 1 manufacturer part number on file: A51P21122-29 (D F P Manufacturing Corp Dba D F P).
Key specifications for A51P21122-29: Surface Treatment Document and Classification: MIL-A-8625 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-A-250/4,T62 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment: ANODIZE OVERALL; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 3 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.