The Nut,plain,round, cataloged under National Stock Number 5310-00-033-4921, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-033-4921 |
| Primary Part Number | 237696 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS |
| Thread Series | UNS |
| Precious Material | SILVER |
| Thread Pitch Diameters | +1.8077 TO 1.8122 INCHES IN |
| Material Document and Classification | AMS 5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.844 INCHES IN |
| Nut Diameter | 2.000 INCHES MINIMUM AND 2.020 INCHES MAXIMUM IN |
| Drive Point Depth | 0.170 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Nut Thickness | 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN |
| Surface Treatment | SILVER THREADS |
| Drive Point Quantity | 8 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 347 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-00-033-4921 is a Nut,plain,round, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-033-4921 has 2 manufacturer part numbers on file: 237696 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 237696 (Kito Mfg Co. Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5306-00-680-7610. Verify interchangeability with system specifications before substitution.
Key specifications for 237696: Surface Treatment Document and Classification: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS; Thread Series: UNS; Precious Material: SILVER; Thread Pitch Diameters: +1.8077 TO 1.8122 INCHES IN. 16 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.