The Washer,spring Tension, cataloged under National Stock Number 5310-01-178-3711, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Reliance Electric Company Dba Reliance & Dodge Brands. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-178-3711 |
| Primary Part Number | 400638-1-E |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Reliance Electric Company Dba Reliance & Dodge Brands |
| Status | ACTIVE |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.118 INCHES NOMINAL IN |
| Material Thickness | 0.035 INCHES MAXIMUM IN |
| Material | STEEL COMP 1075 OVERALL |
| Hole Diameter | 2.420 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 87241 PIECE 64 | Reliance Electric Company Dba Reliance & Dodge Brands (USA) |
| 400638-1-E PRIMARY | Reliance Electric Company Dba Reliance & Dodge Brands (USA) |
| Reference | Meaning |
|---|---|
| 1W3118-035 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 400638-1-E | 3/9 Design control — primary reference Reliance Electric |
| 87241 PIECE 64 | 5/9 Secondary reference Reliance Electric |
NSN 5310-01-178-3711 is a Washer,spring Tension, manufactured by Reliance Electric Company Dba Reliance & Dodge Brands, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-178-3711 has 2 manufacturer part numbers on file: 87241 PIECE 64 (Reliance Electric Company Dba Reliance & Dodge Brands), 400638-1-E (Reliance Electric Company Dba Reliance & Dodge Brands).
Key specifications for 400638-1-E: Overall Height: 0.237 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN; Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 3.118 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.