The Nut,plain,round, cataloged under National Stock Number 5310-01-026-2992, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-026-2992 |
| Primary Part Number | 01634-1 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Nut Counterbore Depth | 0.125 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nut Diameter | 2.125 INCHES NOMINAL IN |
| Counterbore Diameter | 1.750 INCHES NOMINAL NUT IN |
| Nut Thickness | 3.656 INCHES NOMINAL IN |
| Small End Diameter | 2.125 INCHES NOMINAL IN |
| Nut Style | ROUND |
| Thread Class | 2B |
| 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 |
|---|---|
| 01634-1 PRIMARY | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| GCP-661PC15 | M.t. Davidson Company (USA) |
| AYC470RH | M.t. Davidson Company (USA) |
| Reference | Meaning |
|---|---|
| GCP-661 | D/9 Drawing number reference only M.t. Davidson Company |
| AYC-470RH-M | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-026-2992 is a Nut,plain,round, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-026-2992 has 3 manufacturer part numbers on file: 01634-1 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), GCP-661PC15 (M.t. Davidson Company), AYC470RH (M.t. Davidson Company).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-129-8027. Verify interchangeability with system specifications before substitution.
Key specifications for 01634-1: Nut Counterbore Depth: 0.125 INCHES NOMINAL NUT IN; Thread Direction: RIGHT-HAND; Nut Diameter: 2.125 INCHES NOMINAL IN; Counterbore Diameter: 1.750 INCHES NOMINAL NUT IN. 8 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.