The Pin-Rivet, cataloged under National Stock Number 5320-01-170-6333, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 16 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 18 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-170-6333 |
| Primary Part Number | HLT51YC-5-8 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.1630 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN |
| Lubrication | SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Fastener Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | CROWN COUTERSUNK GREATER THAN 135 DEGREES |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Grip Length | 0.505 INCHES MAXIMUM IN |
| Width Between Flats | 0.0791 INCHES MINIMUM AND 0.0801 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 125000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNJC |
| Head Major Diameter | 0.2612 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 |
|---|---|
| HLT51YC-5-8 PRIMARY | Huck International, Inc (USA) |
| HLT51YB-5-8 PRIMARY | Hi-Shear Corporation (USA) |
| HLT51YC-5-8 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT51YC-5-8 PRIMARY | Hi-Shear Corporation (USA) |
| HP4758-08-8 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HLT51YB-5-8 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT51YB-5-8 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT51YC-5-8 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT51YC-5-8 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT51YB-5-8 | West Coast Aerospace, Inc. (USA) |
| HLT51YC-5-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT51YB-5-8 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT51YB-5-8 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT51YC-5-8 | West Coast Aerospace, Inc. (USA) |
| HLT51YB-5-8 PRIMARY | Huck International, Inc (USA) |
| ST3M758C08-8 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| HLT51YB-5-8 | 3/2 Design control — primary reference U.S. Government activity |
| HLT51TB-5-8 | 5/9 Secondary reference Huck International, Inc |
| HLT51YB-5-8 | 5/9 Secondary reference U.S. Government activity |
| AIC-L-758C08-8 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT51DL-5-8 | 5/9 Secondary reference Hi-Shear Corporation |
| HLT51TB-5-8 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M758C08-8 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| MA4758-08-8 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HLT51TB-5-8 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HLT51TB-5-8 | 5/9 Secondary reference Hi-Shear Corporation |
| HLTS51YC-5-8 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HLT51DL-5-8 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba PB Fasteners |
| HLT51YC-5-8 | 3/2 Design control — primary reference U.S. Government activity |
| HLT51YC-5-8 | 5/9 Secondary reference U.S. Government activity |
| HLT51DL-5-8 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| HLT51TB-5-8 | 5/9 Secondary reference U.S. Government activity |
| HLT51DL-5-8 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 10112042 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5320-01-170-6333 is a Pin-Rivet, manufactured by Huck International, Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-170-6333 has 16 manufacturer part numbers on file: HLT51YC-5-8 (Huck International, Inc), HLT51YB-5-8 (Hi-Shear Corporation), HLT51YC-5-8 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT51YC-5-8 (Hi-Shear Corporation), HP4758-08-8 (Heartland Precision Fasteners Inc) and 11 more.
Key specifications for HLT51YC-5-8: Shank Diameter: 0.1630 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN; Lubrication: SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Fastener Length: 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.