The Screw,shoulder, cataloged under National Stock Number 5305-00-224-1010, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-224-1010 |
| Primary Part Number | HT52UA3 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| Fastener Length | 0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Shoulder Length | 0.101 INCHES MINIMUM AND 0.123 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | 3-57,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3422 INCHES MINIMUM AND 0.3432 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 | 3-57,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| 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 | 0.629 INCHES MINIMUM AND 0.634 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 |
|---|---|
| HT52UA3 PRIMARY | Hi-Shear Corporation (USA) |
| HT52UA3 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| 54268-5-3 | 3/2 Design control — primary reference U.S. Government activity |
| 3M55-5-3 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT405A5-3 | 5/9 Secondary reference U.S. Government activity |
| HT405A5-3 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 54268-5-3 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5305-00-224-1010 is a Screw,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-224-1010 has 2 manufacturer part numbers on file: HT52UA3 (Hi-Shear Corporation), HT52UA3 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT52UA3: Head Height: 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN; Fastener Length: 0.703 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Shoulder Length: 0.101 INCHES MINIMUM AND 0.123 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: 3-57,FSCM 76301 MFR REF 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.