The Screw,shoulder, cataloged under National Stock Number 5305-01-142-7216, 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 9 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-142-7216 |
| Primary Part Number | 3M902C7-20A |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.113 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Fastener Length | 1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN |
| Shoulder Length | 1.120 INCHES MINIMUM AND 1.147 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.4677 INCHES MINIMUM AND 0.4682 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.630 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 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 | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.881 INCHES MINIMUM AND 0.888 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 |
|---|---|
| HT4020-7-20AY | Huck International, Inc (USA) |
| HT4020-7-20AY | Hi-Shear Corporation (USA) |
| HT4020-7-20AY | Howmet Global Fastening Systems Inc (USA) |
| 3M902C7-20A PRIMARY | The Boeing Company Div Defense (USA) |
| HT4020-7-20AY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M902 | Huck International, Inc (USA) |
| 11879C7-20A | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC4020-7-20AY | West Coast Aerospace, Inc. (USA) |
| 3M902C7-20A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| 3M902 | 5/9 Secondary reference Deutsch Fastener Corp |
| 3M902 | 7/1 Vendor item drawing reference The Boeing Company Div Defense |
| HT4020-7-20AY | 5/2 Secondary reference U.S. Government activity |
| HT4020-7-20AY | 5/9 Secondary reference U.S. Government activity |
| HT4020-7-20AY | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-142-7216 is a Screw,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-142-7216 has 9 manufacturer part numbers on file: HT4020-7-20AY (Huck International, Inc), HT4020-7-20AY (Hi-Shear Corporation), HT4020-7-20AY (Howmet Global Fastening Systems Inc), 3M902C7-20A (The Boeing Company Div Defense), HT4020-7-20AY (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 4 more.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-241-5078. Verify interchangeability with system specifications before substitution.
Key specifications for 3M902C7-20A: Head Height: 0.113 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Fastener Length: 1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN; Shoulder Length: 1.120 INCHES MINIMUM AND 1.147 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.4677 INCHES MINIMUM AND 0.4682 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.