The Setscrew, cataloged under National Stock Number 5305-00-474-3751, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-474-3751 |
| Primary Part Number | 1645 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Fastener Length | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Hole Type | DRILLED |
| Hole Diameter | 0.064 INCHES NOMINAL0.064 INCHES NOMINAL IN |
| Head Style | FILLISTER |
| Head Diameter | 0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 20 |
| Point Chamfer Angle | 45.0 DEGREES NOMINAL45.0 DEGREES NOMINAL |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL32.0 ROCKWELL C MAXIMUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Configuration Style | ROUND |
| Internal Drive Style | SLOTSLOT |
| Head Height | 0.150 INCHES NOMINAL0.150 INCHES NOMINAL IN |
| Point Length | 0.220 INCHES NOMINAL IN |
| Point Style | FLATFLAT |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Point Diameter | 0.170 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| Hole Quantity | 22 |
| Thread Length | 0.400 INCHES MINIMUM AND 0.400 INCHES MINIMUM AND 0.630 INCHES MAXIMUM0.630 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES0.250 INCHES IN |
| Thread Class | 3A A |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1645 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5305-00-474-3751 is a Setscrew, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-474-3751 has 1 cross-referenced part number: 1645 (Triumph Engine Control Systems Llc).
There are 12 known substitutes for 5305-00-474-3751: 4820-00-064-7241, 5961-00-189-6514, 2920-00-379-0146 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1645: Fastener Length: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN; Hole Type: DRILLED; Hole Diameter: 0.064 INCHES NOMINAL0.064 INCHES NOMINAL IN; Head Style: FILLISTER. 22 total characteristics are documented in the Federal Logistics Information System.