The Washer,spring Tension, cataloged under National Stock Number 5310-01-388-4955, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-388-4955 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OR MIL-C-81562,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 82.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 85.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM |
| Style Designator | SPRING TENSION |
| Material Document and Classification | ASTM A682 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 17.45 MILLIMETERS MINIMUM AND 18.55 MILLIMETERS MAXIMUM MM |
| Material Thickness | 0.74 MILLIMETERS MINIMUM AND 0.86 MILLIMETERS MAXIMUM MM |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL COMP 1050 OR STEEL COMP 1055 OR STEEL COMP 1060 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1080 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1095 OVERALL |
| Hole Diameter | 10.5 MILLIMETERS MINIMUM AND 10.9 MILLIMETERS MAXIMUM MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 8KP447 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Defense Llc |
| 8KP447 | 5/9 Secondary reference Oshkosh Corp |
| D63474/1-16 | 2/2 Government specification standardization U.S. Government activity |
| DOD-W-63474/1 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-388-4955 is a Washer,spring Tension, classified under FSC 5310, Nuts and Washers. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 5310-01-408-3390, 5310-01-408-3393, 5310-01-408-3394. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-388-4955: Overall Height: 2.0 MILLIMETERS MINIMUM AND 4.0 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OR MIL-C-81562,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 82.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 85.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM; Style Designator: SPRING TENSION. 9 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.