The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-624-3638, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-00-624-3638 |
| Primary Part Number | 31-481 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — No Item Name Available |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Countersink Diameter | 0.6540 INCHES MINIMUM AND 0.6600 INCHES MAXIMUM IN |
| End Diameter | 0.7810 INCHES NOMINAL IN |
| Design Type | SOLID |
| Counterbore Length | 0.4850 INCHES MINIMUM AND 0.5150 INCHES MAXIMUM IN |
| Style Designator | SEAT |
| FSC Application Data | CYLINDER HEAD ASSEMBLY,GASOLINE ENGINE,NON-AIRCRAFT |
| Distance From End to First Step | 0.3130 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Material | STEEL |
| First Step Diameter | 0.9450 INCHES MINIMUM AND 0.9510 INCHES MAXIMUM IN |
| Second Step Diameter | 1.2500 INCHES NOMINAL IN |
| Counterbore Diameter | 0.5820 INCHES MINIMUM AND 0.5880 INCHES MAXIMUM IN |
| Bore Diameter | 0.4480 INCHES MINIMUM AND 0.4580 INCHES MAXIMUM IN |
| Countersink Angle in Deg | 30.0 |
| First Step Length | 0.1620 INCHES MINIMUM AND 0.1920 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5340-00-624-3638 is a Seat,helical Compression Spring, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 5340 (No Item Name Available). Status: active.
NSN 5340-00-624-3638 has 3 cross-referenced part numbers: 1A31-481 (Fwd Seagrave Holdings Lp), 810277 (Dresser, Llc), 31-481 (Dresser Industries Inc Leroi Div).
There are 6 known substitutes for 5340-00-624-3638: 5331-00-165-1978, 2530-00-217-9490, 6640-00-774-1214 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 31-481: Countersink Diameter: 0.6540 INCHES MINIMUM AND 0.6600 INCHES MAXIMUM IN; End Diameter: 0.7810 INCHES NOMINAL IN; Design Type: SOLID; Counterbore Length: 0.4850 INCHES MINIMUM AND 0.5150 INCHES MAXIMUM IN. 17 total characteristics are documented in the Federal Logistics Information System.