The Bolt,shoulder, cataloged under National Stock Number 5306-01-156-3733, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-156-3733 |
| Primary Part Number | 2183988 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Extended Washer Thickness | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Head Height | 0.330 INCHES NOMINAL IN |
| Fastener Length | 2.030 INCHES NOMINAL IN |
| Shoulder Length | 1.380 INCHES MINIMUM AND 1.400 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | AMS2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.630 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | AMS7471 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Surface Treatment | SILVER OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.060 INCHES MINIMUM AND 0.080 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 |
|---|---|
| 2183988 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 2183988 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| 2183988 | 5/9 Secondary reference Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co |
| 2183988 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 2183988 | 5/9 Secondary reference Blanc Aircraft Fasteners Inc |
| 2183988 | 5/9 Secondary reference North Bridge Fasteners Div of North Bridge Ltd |
NSN 5306-01-156-3733 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-156-3733 has 2 manufacturer part numbers on file: 2183988 (Sps Technologies, Llc Dba PB Fasteners), 2183988 (Valley-Todeco, Inc. Dba Arconic Fastening Systems).
Key specifications for 2183988: Extended Washer Thickness: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Head Height: 0.330 INCHES NOMINAL IN; Fastener Length: 2.030 INCHES NOMINAL IN; Shoulder Length: 1.380 INCHES MINIMUM AND 1.400 INCHES MAXIMUM FIRST SHOULDER IN. 23 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.