The Screw,shoulder, cataloged under National Stock Number 5305-01-006-2075, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-006-2075 |
| Primary Part Number | HT404A-5-22 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Fastener Length | 1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN |
| Shoulder Length | 1.281 INCHES MINIMUM AND 1.303 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | 3-53 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.326 INCHES MINIMUM AND 0.327 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | 3-53 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.628 INCHES MINIMUM AND 0.633 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 |
|---|---|
| HT404A-5-22 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT51UA-22 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT51UA-22 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 3M51-5-22 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT404A-5-22 | 5/9 Secondary reference U.S. Government activity |
| 54267-5-22 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 54267-5-22 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-006-2075 is a Screw,shoulder, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-006-2075 has 3 manufacturer part numbers on file: HT404A-5-22 (Howmet Global Fastening Systems Inc), HT51UA-22 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT51UA-22 (Hi-Shear Corporation).
Key specifications for HT404A-5-22: Fastener Length: 1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN; Shoulder Length: 1.281 INCHES MINIMUM AND 1.303 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: 3-53 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Shoulder Diameter: 0.326 INCHES MINIMUM AND 0.327 INCHES MAXIMUM FIRST SHOULDER IN. 18 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.