The Setscrew, cataloged under National Stock Number 5305-01-178-2543, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-178-2543 |
| Primary Part Number | 16610916-001 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services |
| Status | ACTIVE |
| Point Diameter | 0.121 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN |
| Head Height | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Point Length | 0.125 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Fastener Length | 0.425 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE THREADS |
| Thread Length | 0.270 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Supplementary Features | ALTERED FROM MS51957-45 NSN 5305-054-6670 |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES OR SAE ASSN STD ALL MATERIAL RESPONSES OR 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Point Style | DOG |
| Surface Treatment | PASSIVATE THREADS |
| Surface Treatment | PASSIVATE HEAD |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.306 INCHES MINIMUM AND 0.322 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 |
|---|---|
| 16610916-001 PRIMARY | Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services (USA) |
NSN 5305-01-178-2543 is a Setscrew, manufactured by Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-178-2543 has 1 manufacturer part number on file: 16610916-001 (Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services).
Key specifications for 16610916-001: Point Diameter: 0.121 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN; Head Height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN; Point Length: 0.125 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN; Fastener Length: 0.425 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN. 21 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.