The Screw,machine, cataloged under National Stock Number 5305-01-332-9633, 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 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-332-9633 |
| Primary Part Number | 3M1155-1 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.015 INCHES MAXIMUM IN |
| Fastener Length | 1.235 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN |
| Thread Length | 1.302 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FILLISTER COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.125 INCHES NOMINAL IN |
| Screw Material | STEEL |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.385 INCHES NOMINAL 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 |
|---|---|
| 3M1155-1 | Heartland Precision Fasteners Inc (USA) |
| 3M1155-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M1155-1 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| 3M1155-1 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 3M1155-1 | 3/2 Design control — primary reference U.S. Government activity |
| 10113698 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3M1155-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-01-332-9633 is a Screw,machine, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-332-9633 has 3 manufacturer part numbers on file: 3M1155-1 (Heartland Precision Fasteners Inc), 3M1155-1 (Howmet Global Fastening Systems Inc), 3M1155-1 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for 3M1155-1: Head Height: 0.015 INCHES MAXIMUM IN; Fastener Length: 1.235 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN; Thread Length: 1.302 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN. 13 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.