The Screw,close Tolerance, cataloged under National Stock Number 5305-01-528-6710, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 16 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-528-6710 |
| Primary Part Number | 3M1170C3-19A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| Spline Minor Diameter | 0.1105 INCHES MINIMUM AND 0.1125 INCHES MAXIMUM IN |
| Fastener Length | 1.517 INCHES MINIMUM AND 1.547 INCHES MAXIMUM IN |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.177 INCHES MINIMUM AND 1.197 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM 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 | 32 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.265 INCHES MINIMUM AND 0.272 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 |
|---|---|
| 3M1170C3-19A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 11845C3-19A PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1027C3-19A | Hi-Shear Corporation (USA) |
| 3M1170C3-19A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027C3-19A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 3M1170C3-19A | Houston Precision Fasteners I Lp (USA) |
| TX1027C3-19A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027C3-19A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1170C3-19A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027C3-19A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1170C3-19A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027C3-19A | Howmet Global Fastening Systems Inc (USA) |
| TX1027C3-19A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GS1014C3-19A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1170C3-19A PRIMARY | Saturn Fasteners Inc (USA) |
| WC1170C3-19A | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| TX1027C3-19A | 5/9 Secondary reference Sps Technologies Inc |
| TX1027C3-19A | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-528-6710 is a Screw,close Tolerance, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-528-6710 has 16 manufacturer part numbers on file: 3M1170C3-19A (Heartland Precision Fasteners Inc), 11845C3-19A (Reid Products Inc. Dba Reid Products Inc), TX1027C3-19A (Hi-Shear Corporation), 3M1170C3-19A (Valley-Todeco, Inc. Dba Arconic Fastening Systems), TX1027C3-19A (Fairchild Fasteners Europe - Vsd Gmbh) and 11 more.
Key specifications for 3M1170C3-19A: Spline Minor Diameter: 0.1105 INCHES MINIMUM AND 0.1125 INCHES MAXIMUM IN; Fastener Length: 1.517 INCHES MINIMUM AND 1.547 INCHES MAXIMUM IN; Thread Length: 0.345 INCHES NOMINAL IN; Criticality Code Justification: AGAV. 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.