The Screw,shoulder, cataloged under National Stock Number 5305-01-142-7221, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-142-7221 |
| Primary Part Number | 3M902C5-15A |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| Fastener Length | 1.453 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Shoulder Length | 0.851 INCHES MINIMUM AND 0.873 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.3427 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 | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| HT4020-5-15AY | Hi-Shear Corporation (USA) |
| HT4020-5-15AY | Huck International, Inc (USA) |
| 11879C5-15A | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4020-5-15AY | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 3M902C5-15A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4020-5-15AY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4020-5-15AY | Howmet Global Fastening Systems Inc (USA) |
| 3M902C5-15A | Plastic Sealing Corp (USA) |
| 3M902C5-15A PRIMARY | The Boeing Company Div Defense (USA) |
| WC4020-5-15AY | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| HT4020-5-15AY | 5/9 Secondary reference Sps Technologies Inc |
| HT4020-5-15AY | 5/9 Secondary reference U.S. Government activity |
| HT4020-5-15AY | 5/9 Secondary reference U.S. Government activity |
| HT4020-5-15AY | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-142-7221 is a Screw,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-142-7221 has 10 manufacturer part numbers on file: HT4020-5-15AY (Hi-Shear Corporation), HT4020-5-15AY (Huck International, Inc), 11879C5-15A (Reid Products Inc. Dba Reid Products Inc), HT4020-5-15AY (Sps Technologies Ltd, Tj Brooks Division), 3M902C5-15A (Fastener Innovation Technology, Inc. Dba F I T) and 5 more.
Key specifications for 3M902C5-15A: Head Height: 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN; Fastener Length: 1.453 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Shoulder Length: 0.851 INCHES MINIMUM AND 0.873 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.3427 INCHES MINIMUM AND 0.3432 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.