The Nut,plain,round, cataloged under National Stock Number 5310-01-162-0752, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-162-0752 |
| Primary Part Number | 656605 |
| 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 2408 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Hole Configuration Style | CONFIGURATION F |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6323 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 5.000 INCHES IN |
| Nut Diameter | 5.530 INCHES MINIMUM AND 5.550 INCHES MAXIMUM IN |
| Drive Point Depth | 0.150 INCHES NOMINAL IN |
| Undercut Thickness | 0.220 INCHES NOMINAL IN |
| Nut Thickness | 0.710 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Small End Diameter | 5.230 INCHES MINIMUM AND 5.250 INCHES MAXIMUM IN |
| Drilled Hole Diameter | 0.154 INCHES MINIMUM AND 0.159 INCHES MAXIMUM IN |
| Surface Treatment | TIN OVERALL |
| Drive Point Quantity | 9 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Hole Type and Quantity | 9 DRILLED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 656605 | Paramount Machine Company, Inc. Dba Paramount Machine Co Inc (USA) |
| 656605 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 656605 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 656605 | 5/9 Secondary reference Lewis Machine, Llc |
NSN 5310-01-162-0752 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 5310-01-162-0752 has 3 manufacturer part numbers on file: 656605 (Paramount Machine Company, Inc. Dba Paramount Machine Co Inc), 656605 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 656605 (Rtx Corporation Div Pratt & Whitney).
1 possible match (shared part number, not a government interchangeability claim): 1660-01-675-7703. Verify interchangeability with system specifications before substitution.
Key specifications for 656605: Surface Treatment Document and Classification: AMS 2408 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT (UNJ); Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Hole Configuration Style: CONFIGURATION F. 21 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.