The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-01-238-0644, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Electronic Systems. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-238-0644 |
| Primary Part Number | 990C178-H01 |
| Item Name | Nut,self-Locking,clinch |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation Dba Electronic Systems |
| Status | ACTIVE |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Direction | RIGHT-HAND |
| Pilot Length | 0.050 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.277 INCHES NOMINAL IN |
| Width Across Flats | 0.344 INCHES NOMINAL IN |
| Nominal Thread Size | 0.112 INCHES IN |
| Features Provided | FLOATING NUT |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Quantity Per Inch | 40 |
| Material Document and Classification | ASTM A582 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OR QQ-S-764 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-764 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-764 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-764 FED SPEC 6TH MATERIAL RESPONSE OVERALL |
| Surface Treatment Document and Classification | QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X OR STEEL COMP 303CU OR STEEL COMP 303MA OR STEEL COMP 303PB OVERALL |
| Pilot Diameter | 0.286 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Thread Class | 2B |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 990C178-H01 PRIMARY | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| 114FLN(0.062) | Precision Metal Products Co (USA) |
| 990C178H01 | Precision Metal Products Co (USA) |
| 717820-1 | Raytheon Company Div Rmd Strategic (USA) |
NSN 5310-01-238-0644 is a Nut,self-Locking,clinch, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-238-0644 has 4 cross-referenced part numbers: 990C178-H01 (Northrop Grumman Systems Corporation Dba Electronic Systems), 114FLN(0.062) (Precision Metal Products Co), 990C178H01 (Precision Metal Products Co), 717820-1 (Raytheon Company Div Rmd Strategic).
There are 3 known substitutes for 5310-01-238-0644: 3110-00-175-2549, 5999-01-591-8895, 7025-01-644-9571. Verify interchangeability with system specifications before substitution.
Key specifications for 990C178-H01: Surface Treatment: PASSIVATE OVERALL; Thread Direction: RIGHT-HAND; Pilot Length: 0.050 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN. 15 total characteristics are documented in the Federal Logistics Information System.