The Screw,shoulder, cataloged under National Stock Number 5305-00-939-0660, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-939-0660 |
| Primary Part Number | MS51975-29 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use |
| Status | CANCELLED |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Shoulder Diameter | 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Quantity Per Inch | 16 |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Head Height | 0.302 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Thread Length | 0.595 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Length | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM FIRST SHOULDER IN |
| Fastener Length | 1.600 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN |
| Head Diameter | 0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Material | STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS51975-29 PRIMARY | National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA) |
| 20087 | Acco Industries Inc Sub of Babcock Intl Inc (USA) |
| MS51975-29 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 703-2298071 PIE | Naval Ship Systems Command (USA) |
| 12Z1160-7 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5305-00-939-0660 is a Screw,shoulder, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-939-0660 has 5 cross-referenced part numbers: MS51975-29 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 20087 (Acco Industries Inc Sub of Babcock Intl Inc), MS51975-29 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 703-2298071 PIE (Naval Ship Systems Command), 12Z1160-7 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
There are 7 known substitutes for 5305-00-939-0660: 2240-00-224-8303, 5330-00-291-1727, 5330-00-453-4172 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS51975-29: Shoulder Shape: ROUND FIRST SHOULDER; Minimum Tensile Strength: 140000 POUNDS PER SQUARE INCH LBS; Internal Drive Style: HEXAGON; Shoulder Diameter: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN. 20 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-939-0660 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.