The Nut,self-Locking,spline, cataloged under National Stock Number 5310-01-341-8552, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Div Huck Products Division. Government technical data includes 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-341-8552 |
| Primary Part Number | HF91-L-10-B-2 |
| Item Name | Nut,self-Locking,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huck International, Inc. Div Huck Products Division |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Width Across Flats | 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Nut Length | 0.557 INCHES MINIMUM AND 0.587 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE BRACKET |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE BRACKET |
| Material Document and Classification | ASTM-A-493 ASSN STD ALL MATERIAL RESPONSES SHELL |
| Nut Counterbore Depth | 0.167 INCHES NOMINAL FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Counterbore Diameter | 0.208 INCHES MINIMUM AND 0.238 INCHES MAXIMUM FIRST END IN |
| Pilot Diameter | 0.225 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Pilot Length | 0.115 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.425 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE NUT |
| Surface Treatment | CADMIUM AND CHROMATE BRACKET |
| Nut Style | SPLINE (FLOATING) |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 NUT |
| Material | STEEL COMP 631 BRACKET |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 SHELL |
| 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 |
|---|---|
| HF91-L-10-B-2 PRIMARY | Huck International, Inc. Div Huck Products Division (USA) |
| Reference | Meaning |
|---|---|
| 3D0082-3B2 | 7/2 Vendor item drawing reference U.S. Government activity |
| HF91-L-10-B-2 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-341-8552 is a Nut,self-Locking,spline, manufactured by Huck International, Inc. Div Huck Products Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-341-8552 has 1 manufacturer part number on file: HF91-L-10-B-2 (Huck International, Inc. Div Huck Products Division).
Key specifications for HF91-L-10-B-2: Lubrication: DRY FILM LUBRICANT; Width Across Flats: 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN; Nut Length: 0.557 INCHES MINIMUM AND 0.587 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT. 25 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.