The Screw,machine, cataloged under National Stock Number 5305-01-271-2041, 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 17 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-271-2041 |
| Primary Part Number | 3M893-5-7 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.203 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN |
| Screw Surface Treatment | ALUMINUM AND CHROMATE |
| Fastener Length | 0.892 INCHES MINIMUM AND 0.922 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 | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| 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 | 24 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.594 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | MIL-C-83488,TYPE 2,CLASS 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 |
|---|---|
| AIC940-5-7 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M893-5-7 PRIMARY | The Boeing Company Div Defense (USA) |
| SC2163-5-7 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M893-5-7 | 5/9 Secondary reference Usm Corp Sub of Emhart Industries Inc Parker-Kalon Fastener Div |
| A532-5-7 | 5/9 Secondary reference U.S. Government activity |
| 3M893-5-7 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 10113621 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| A532-5-7 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| MA3893-5-7 | 5/9 Secondary reference Usm Corp Sub of Emhart Industries Inc Parker-Kalon Fastener Div |
| MA3893-5-7 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
NSN 5305-01-271-2041 is a Screw,machine, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-271-2041 has 3 manufacturer part numbers on file: AIC940-5-7 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M893-5-7 (The Boeing Company Div Defense), SC2163-5-7 (Howmet Global Fastening Systems Inc).
Key specifications for 3M893-5-7: Head Height: 0.203 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN; Screw Surface Treatment: ALUMINUM AND CHROMATE; Fastener Length: 0.892 INCHES MINIMUM AND 0.922 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. 17 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.