The Screw,shoulder, cataloged under National Stock Number 5305-01-338-7304, 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 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-338-7304 |
| Primary Part Number | CHT4067-4-7AY |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.582 INCHES MINIMUM AND 0.602 INCHES MAXIMUM IN |
| Fastener Length | 0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| Shoulder Length | 0.3788 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | MIL-S-83488,TY2,CL3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.2807 INCHES MINIMUM AND 0.2997 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | O RING AND CETYL ALCOHOL LUBRICANT |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ALUMINUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.477 INCHES MINIMUM AND 0.508 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 |
|---|---|
| CHT4067-4-7AY PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| CHT4067-4-7AY | 5/2 Secondary reference U.S. Government activity |
| CHT4067-4-7AY | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-338-7304 is a Screw,shoulder, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-338-7304 has 1 manufacturer part number on file: CHT4067-4-7AY (Howmet Global Fastening Systems Inc).
Key specifications for CHT4067-4-7AY: Head Height: 0.582 INCHES MINIMUM AND 0.602 INCHES MAXIMUM IN; Fastener Length: 0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN; Shoulder Length: 0.3788 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: MIL-S-83488,TY2,CL3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 21 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.