The Nut,sleeve, cataloged under National Stock Number 5310-01-204-6855, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-204-6855 |
| Primary Part Number | 74A731220-2001 |
| Item Name | Nut,sleeve |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flange Diameter | 0.720 INCHES NOMINAL IN |
| Nut Length | 0.783 INCHES MINIMUM AND 0.793 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | PS13101,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS |
| Flange Thickness | 0.145 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Nut Diameter | 0.634 INCHES MINIMUM AND 0.636 INCHES MAXIMUM IN |
| Cross-Sectional Shape | ROUND BOTH ENDS |
| Surface Treatment | CADMIUM OVERALL EXCEPT THREADS |
| Countersink Angle | 88.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM BOTH ENDS |
| Nut Style | SLEEVE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 630 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 |
|---|---|
| 74A731220-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 74A731220-2001 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
| 10110153 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-204-6855 is a Nut,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-204-6855 has 1 manufacturer part number on file: 74A731220-2001 (The Boeing Company Div Defense).
Key specifications for 74A731220-2001: Flange Diameter: 0.720 INCHES NOMINAL IN; Nut Length: 0.783 INCHES MINIMUM AND 0.793 INCHES MAXIMUM IN; Surface Treatment Document and Classification: PS13101,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS; Flange Thickness: 0.145 INCHES MINIMUM AND 0.155 INCHES MAXIMUM 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.