The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-321-2392, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-321-2392 |
| Primary Part Number | A0L4166-109 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.0781 INCHES MINIMUM AND 0.0791 INCHES MAXIMUM IN |
| Head Height | 0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN |
| Fastener Length | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 TY 1 OR TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.573 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 56 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.134 INCHES MINIMUM AND 0.140 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 |
|---|---|
| A0L4166-109 | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
| 965811-109C | Howmet Global Fastening Systems Inc (USA) |
| 73573-92-10C | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC811-02-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PB1069-109C | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| RA52003-109 | 3/9 Design control — primary reference U.S. Government activity |
| 965811-109C | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-01-321-2392 is a Screw,cap,socket Head, manufactured by All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-321-2392 has 5 manufacturer part numbers on file: A0L4166-109 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners), 965811-109C (Howmet Global Fastening Systems Inc), 73573-92-10C (Sps Technologies, Llc Dba PB Fasteners), AIC811-02-10 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PB1069-109C (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for A0L4166-109: Width Across Flats: 0.0781 INCHES MINIMUM AND 0.0791 INCHES MAXIMUM IN; Head Height: 0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN; Fastener Length: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 TY 1 OR TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.