The Screw,shoulder, cataloged under National Stock Number 5305-01-142-8381, 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 20 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-142-8381 |
| Primary Part Number | HT4049-5D13Y |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM IN |
| Shoulder Length | 0.682 INCHES MINIMUM AND 0.702 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.350 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.049 INCHES MINIMUM AND 1.089 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.625 INCHES MINIMUM AND 0.635 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 |
|---|---|
| 11901-5D13 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4049-5D13Y PRIMARY | Hi-Shear Corporation (USA) |
| HT4049-5D13Y PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HT4049-5D13Y | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 3M959-5D13 | 5/2 Secondary reference U.S. Government activity |
| HT4049-5D13Y | 3/2 Design control — primary reference U.S. Government activity |
| HT4049-5D13Y | 5/9 Secondary reference U.S. Government activity |
| HT4049-5D13Y | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 3M959-5D13 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4049-5D13Y | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-142-8381 is a Screw,shoulder, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-142-8381 has 3 manufacturer part numbers on file: 11901-5D13 (Reid Products Inc. Dba Reid Products Inc), HT4049-5D13Y (Hi-Shear Corporation), HT4049-5D13Y (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT4049-5D13Y: Fastener Length: 1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM IN; Shoulder Length: 0.682 INCHES MINIMUM AND 0.702 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Diameter: 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN. 20 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.