The Screw,shoulder, cataloged under National Stock Number 5305-01-009-6701, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 19 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-009-6701 |
| Primary Part Number | HT41UA14 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Fastener Length | 1.328 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Shoulder Length | 0.6748 INCHES MINIMUM AND 0.6928 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.443 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 4130 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.501 INCHES MINIMUM AND 0.506 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 |
|---|---|
| HT41UA14 PRIMARY | Hi-Shear Corporation (USA) |
| HT409A-4-14 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT41UA14 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT41UA14 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT409A-4-14 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 54267-4-14 | 5/2 Secondary reference U.S. Government activity |
| HT409A-4-14 | 5/9 Secondary reference U.S. Government activity |
| 54267-4-14 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 3M50-4-14 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-01-009-6701 is a Screw,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-009-6701 has 5 manufacturer part numbers on file: HT41UA14 (Hi-Shear Corporation), HT409A-4-14 (Fairchild Fasteners Europe - Vsd Gmbh), HT41UA14 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT41UA14 (Fairchild Fasteners Europe - Vsd Gmbh), HT409A-4-14 (Howmet Global Fastening Systems Inc).
Key specifications for HT41UA14: Head Height: 0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN; Fastener Length: 1.328 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN; Shoulder Length: 0.6748 INCHES MINIMUM AND 0.6928 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 19 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.