The Nut,self-Locking,barrel, cataloged under National Stock Number 5310-01-303-7620, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is C N C Techniques Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-303-7620 |
| Primary Part Number | 1452054 |
| Item Name | Nut,self-Locking,barrel |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | C N C Techniques Corporation |
| Status | ACTIVE |
| Nut Length | 0.800 INCHES MINIMUM AND 0.825 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| Thread Series | UNF |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS 5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Diameter | 0.550 INCHES MINIMUM AND 0.553 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.395 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL EXCEPT INSERT |
| Nut Style | NON-FLOATING SELF-LOCKING BARREL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Material | STEEL COMP 630 OVERALL EXCEPT INSERT |
| Barrel Height | 0.325 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 1452054 PRIMARY | C N C Techniques Corporation (USA) |
| Reference | Meaning |
|---|---|
| K611786-1 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5310-01-303-7620 is a Nut,self-Locking,barrel, manufactured by C N C Techniques Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-303-7620 has 1 manufacturer part number on file: 1452054 (C N C Techniques Corporation).
Key specifications for 1452054: Nut Length: 0.800 INCHES MINIMUM AND 0.825 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT; Thread Series: UNF; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM. 17 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.