The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-344-9653, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-344-9653 |
| Primary Part Number | HS7038M6-16 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Width Across Flats | 4.0 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 16.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 14.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 90.0 DEGREES NOMINAL |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| Head Diameter | 12.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| HS7038M6-16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HS7038M6-16 | Fastener Technology Corp (USA) |
| HS7038M6-16 PRIMARY | The Boeing Company (USA) |
| HS7038M6-16 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| HS7038M6-16 | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| OSS7038M6-16 | 5/9 Secondary reference Alliant Techsystems Operations Llc |
| OSS7038M6-16 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corp Div Weapon System |
| HS7038M6-16 | 3/9 Design control — primary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5305-01-344-9653 is a Screw,cap,socket Head, manufactured by The Boeing Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-344-9653 has 5 manufacturer part numbers on file: HS7038M6-16 (Sps Technologies, Llc Dba PB Fasteners), HS7038M6-16 (Fastener Technology Corp), HS7038M6-16 (The Boeing Company), HS7038M6-16 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), HS7038M6-16 (Bristol Industries, Llc).
Key specifications for HS7038M6-16: Width Across Flats: 4.0 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Fastener Length: 16.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 16 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.