The Rivet,blind, cataloged under National Stock Number 5320-01-321-2503, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Huck. Government technical data includes 22 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-321-2503 |
| Primary Part Number | UBPT08-11 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck |
| Status | ACTIVE |
| Shank Diameter | 0.258 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Head Height | 0.130 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 0.906 INCHES MAXIMUM IN |
| Expansion Device | SERRATED STEM-TYPE W |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE STEM |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES SLEEVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES MECHANICAL LOCK |
| Hardness Rating | 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM STEM |
| Material Document and Classification | ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM A331 ASSN STD ALL MATERIAL RESPONSES SLEEVE |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES MECHANICAL LOCK |
| Head Style | TAPERED PAN |
| Grip Length | 0.656 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN |
| Shank Style | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| Surface Treatment | CADMIUM STEM |
| Surface Treatment | CADMIUM AND CHROMATE SLEEVE |
| Surface Treatment | CADMIUM AND CHROMATE MECHANICAL LOCK |
| Minimum Tensile Strength | 112000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL COMP 8740 STEM |
| Material | STEEL COMP 4027 OR STEEL COMP 4037 SLEEVE |
| Material | STEEL COMP 1010 OR STEEL COMP 1020 OR STEEL COMP 1144 OR STEEL COMP 4037 OR STEEL COMP 4130 MECHANICAL LOCK |
| Head Major Diameter | 0.400 INCHES MINIMUM AND 0.432 INCHES MAXIMUM 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 |
|---|---|
| UBPT08-11 | Huck (FRA) |
| Reference | Meaning |
|---|---|
| UBPT8-11 | 5/1 Secondary reference Huck |
| MS90354U0811 | 5/9 Secondary reference U.S. Government activity |
| MS90354U0811 | 3/2 Design control — primary reference U.S. Government activity |
| BOM-R8-11 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5320-01-321-2503 is a Rivet,blind, manufactured by Huck, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-321-2503 has 1 manufacturer part number on file: UBPT08-11 (Huck).
Key specifications for UBPT08-11: Shank Diameter: 0.258 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Head Height: 0.130 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 0.906 INCHES MAXIMUM IN; Expansion Device: SERRATED STEM-TYPE W. 22 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.