The Washer,spring Tension, cataloged under National Stock Number 5310-01-511-2256, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-511-2256 |
| Primary Part Number | SSB-0185-S17 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Material Document and Classification | AMS 5529, 17-7 PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.850 INCHES NOMINAL IN |
| Material Thickness | 0.018 INCHES NOMINAL IN |
| Surface Treatment | OIL OVERALL |
| Material | STEEL COMP 631 OVERALL |
| Hole Diameter | 1.566 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 |
|---|---|
| SSB-0185-S17 | Smalley Steel Ring Co. (USA) |
| Reference | Meaning |
|---|---|
| 5631306 | 1/2 Source control — Government-approved source U.S. Government activity |
| 5631306-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-511-2256 is a Washer,spring Tension, manufactured by Smalley Steel Ring Co., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-511-2256 has 1 manufacturer part number on file: SSB-0185-S17 (Smalley Steel Ring Co.).
Key specifications for SSB-0185-S17: Overall Height: 0.150 INCHES NOMINAL IN; Style Designator: SPRING TENSION; Material Document and Classification: AMS 5529, 17-7 PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.850 INCHES NOMINAL IN. 7 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.