The Screw,close Tolerance, cataloged under National Stock Number 5305-01-526-3950, 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 19 specifications, cited from the U.S. Government catalog. The record lists 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-526-3950 |
| Primary Part Number | 3M1170C5-10A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Point Diameter | 0.469 INCHES NOMINAL IN |
| Fastener Length | 1.079 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN |
| Thread Length | 0.464 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Grip Diameter | 0.312 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE 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 | 0.464 INCHES MINIMUM AND 0.473 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 | X |
| Part Number | Manufacturer |
|---|---|
| 3M1170C5-10A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027C5-10A PRIMARY | Huck International, Inc (USA) |
| WC1170C5-10A | West Coast Aerospace, Inc. (USA) |
| 3M1170C5-10A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027C5-10A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M1170C5-10A | Houston Precision Fasteners I Lp (USA) |
| TX1027C5-10A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11845C5-10A PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1027C5-10A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1170C5-10A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027C5-10A | Howmet Global Fastening Systems Inc (USA) |
| TX1027C5-10A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GS1014C5-10A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1170C5-10A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 3M1170C5-10A PRIMARY | Saturn Fasteners Inc (USA) |
| TX1027C5-10A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1027C5-10A | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| TX1027C5-10A | 3/2 Design control — primary reference U.S. Government activity |
| TX1027C5-10A | 5/2 Secondary reference U.S. Government activity |
| TX1027C5-10A | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-526-3950 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-526-3950 has 17 manufacturer part numbers on file: 3M1170C5-10A (The Boeing Company Div Defense), TX1027C5-10A (Huck International, Inc), WC1170C5-10A (West Coast Aerospace, Inc.), 3M1170C5-10A (Fastener Innovation Technology, Inc. Dba F I T), TX1027C5-10A (Sps Technologies, Llc Dba PB Fasteners) and 12 more.
Key specifications for 3M1170C5-10A: Point Diameter: 0.469 INCHES NOMINAL IN; Fastener Length: 1.079 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN; Thread Length: 0.464 INCHES MINIMUM AND 0.474 INCHES MAXIMUM IN; Material Document and Classification: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 19 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.