The Bolt,shear, cataloged under National Stock Number 5306-01-049-4027, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-049-4027 |
| Primary Part Number | VAL23033-6-16 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Extended Washer Thickness | 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN |
| Head Height | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN |
| Fastener Length | 1.599 INCHES MINIMUM AND 1.629 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN |
| Thread Length | 0.589 INCHES MINIMUM AND 0.639 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-571 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| ST3M571-6-16 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| S11-1059-6-16 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VAL23033-6-16 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M571-6-16 PRIMARY | The Boeing Company Div Defense (USA) |
| MB84-6-16 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| PBF23T-6P16 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC752-6-16 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GS1030-6-16 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M571-6-16 | J M Precision Inc (USA) |
| MB84-6-16 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M571-6-16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VS3060-6-16 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 74328-6-16 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| VS3060-6-16 | 5/9 Secondary reference U.S. Government activity |
| ST3M571-6-16 | 5/2 Secondary reference U.S. Government activity |
| S371-6-16 | 5/9 Secondary reference U.S. Government activity |
| S371-6-16 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM3326-6-16 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 74328-6-16 | 3/2 Design control — primary reference U.S. Government activity |
| BM3326-6-16 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-049-4027 is a Bolt,shear, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-049-4027 has 11 manufacturer part numbers on file: ST3M571-6-16 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), S11-1059-6-16 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), VAL23033-6-16 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M571-6-16 (The Boeing Company Div Defense), MB84-6-16 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 6 more.
Key specifications for VAL23033-6-16: Extended Washer Thickness: 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN; Head Height: 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN; Fastener Length: 1.599 INCHES MINIMUM AND 1.629 INCHES MAXIMUM IN; Extended Washer Diameter: 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN. 18 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.