The Spring,helical,torsion, cataloged under National Stock Number 5360-00-316-4574, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Litton Systems Inc Itek Optical Systems Div. Government technical data includes 10 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-316-4574 |
| Primary Part Number | B21143 |
| Item Name | Spring,helical,torsion |
| FSC / FSG | 5360 / 53 — No Item Name Available |
| Manufacturer | Litton Systems Inc Itek Optical Systems Div |
| Status | ACTIVE |
| End Length | 1.000 INCHES NOMINAL BOTH ENDS IN |
| Material | STEEL UNS K08500 OVERALL |
| Inside Diameter | 0.165 INCHES NOMINAL IN |
| Style Designator | SINGLE TORSION LEFT HAND |
| End Style | ONE HOOK END OVERALL |
| Spring Free Length | 0.172 INCHES NOMINAL IN |
| Spring Free Outside Diameter | 0.215 INCHES NOMINAL IN |
| Coil Quantity | 4-1/2 |
| Coil Helix Direction | LEFT-HAND |
| End Angular Relationship | ENDS PARALLEL ONE TO OTHER |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B21143 | Litton Systems Inc Itek Optical Systems Div (USA) |
| 62814 | Arma Div Ambac Industries Inc |
| 979-1A152 | Gap Instrument Corp (USA) |
| 206-235 | Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA) |
| 979-1A152 | Advanced Logic Resources Inc Dba Alr (USA) |
NSN 5360-00-316-4574 is a Spring,helical,torsion, manufactured by Litton Systems Inc Itek Optical Systems Div, classified under FSC 5360 (No Item Name Available). Status: active.
NSN 5360-00-316-4574 has 5 cross-referenced part numbers: B21143 (Litton Systems Inc Itek Optical Systems Div), 62814 (Arma Div Ambac Industries Inc), 979-1A152 (Gap Instrument Corp), 206-235 (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp), 979-1A152 (Advanced Logic Resources Inc Dba Alr).
There are 9 known substitutes for 5360-00-316-4574: 5330-00-126-1809, 3455-00-236-3633, 3020-00-353-9319 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for B21143: End Length: 1.000 INCHES NOMINAL BOTH ENDS IN; Material: STEEL UNS K08500 OVERALL; Inside Diameter: 0.165 INCHES NOMINAL IN; Style Designator: SINGLE TORSION LEFT HAND. 10 total characteristics are documented in the Federal Logistics Information System.