The Screw,close Tolerance, cataloged under National Stock Number 5305-01-512-8325, 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 20 specifications, cited from the U.S. Government catalog. The record lists 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-512-8325 |
| Primary Part Number | 3M1170C5-14AF |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Spline Minor Diameter | 0.1570 INCHES MINIMUM AND 0.1600 INCHES MAXIMUM IN |
| Fastener Length | 2.204 INCHES MINIMUM AND 2.234 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488,TYPE II,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.2195 INCHES MINIMUM AND 0.2225 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.313 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.438 INCHES MINIMUM AND 0.445 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 | Y |
| Part Number | Manufacturer |
|---|---|
| TX1027C5-14AF | Hi-Shear Corporation (USA) |
| TX1027C5-14AF | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1170C5-14AF PRIMARY | The Boeing Company Div Defense (USA) |
| GS1014C5-14AF PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| TX1027C5-14AF | Howmet Global Fastening Systems Inc (USA) |
| TX1024C5-14AF PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027C5-14AF | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1170C5-14AF | Houston Precision Fasteners I Lp (USA) |
| 3M1170C5-14AF PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1170C5-14AF PRIMARY | Saturn Fasteners Inc (USA) |
| 11825C5-14AF | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1027C5-14AF | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 3M1170C5-14AF PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027C5-14AF | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027C5-14AF | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| TX1024C5-14AF PRIMARY | Huck International, Inc (USA) |
| 3M1170C5-14AF PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 11845C5-14AF PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC1170C5-14AF | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| TX1027C5-14AF | 5/2 Secondary reference U.S. Government activity |
| TX1027C5-14AF | 5/9 Secondary reference Sps Technologies Inc |
| TX1024C5-14AF | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-512-8325 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-512-8325 has 19 manufacturer part numbers on file: TX1027C5-14AF (Hi-Shear Corporation), TX1027C5-14AF (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1170C5-14AF (The Boeing Company Div Defense), GS1014C5-14AF (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), TX1027C5-14AF (Howmet Global Fastening Systems Inc) and 14 more.
Key specifications for 3M1170C5-14AF: Spline Minor Diameter: 0.1570 INCHES MINIMUM AND 0.1600 INCHES MAXIMUM IN; Fastener Length: 2.204 INCHES MINIMUM AND 2.234 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488,TYPE II,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.469 INCHES NOMINAL IN. 20 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.