The Screw,machine, cataloged under National Stock Number 5305-01-129-4432, 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 16 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-129-4432 |
| Primary Part Number | SC2671-3-11 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Screw Surface Treatment | ALUMINUM |
| Fastener Length | 0.671 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN |
| Screw Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS6322 ASSN STD 2ND MATERIAL RESPONSE |
| Thread Length | 0.607 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.305 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Screw Material | STEEL COMP E4340 OR STEEL COMP 8740 |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Screw Surface Treatment Document and Classification | MIL-C-83488,TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| SC2671-3-11 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| SC2671-3-11 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 123630-3-11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC944-3-11 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF1580-3-11 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M933-3-11 | The Boeing Company Div Defense (USA) |
| SC2671-3-11 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| SC2671-3-11 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SC2671-3-11 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M933-3-11 | 5/9 Secondary reference U.S. Government activity |
| MA5933-3-11 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 3M933-3-11 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| SC2671-3-11 | 5/9 Secondary reference U.S. Government activity |
| SC2671-3-11 | 5/2 Secondary reference U.S. Government activity |
| SC2671-3-11 | 5/9 Secondary reference Usm Corp Sub of Emhart Industries Inc Parker-Kalon Fastener Div |
NSN 5305-01-129-4432 is a Screw,machine, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-129-4432 has 9 manufacturer part numbers on file: SC2671-3-11 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), SC2671-3-11 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 123630-3-11 (Sps Technologies, Llc Dba PB Fasteners), AIC944-3-11 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF1580-3-11 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 4 more.
Key specifications for SC2671-3-11: Head Height: 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Screw Surface Treatment: ALUMINUM; Fastener Length: 0.671 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN; Screw Material Document and Classification: MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS6322 ASSN STD 2ND MATERIAL RESPONSE. 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.