PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4038Thumbscrew

Roller Bearing Co of America, Inc Div Pic Design · NSN 5305-01-226-9461 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-226-9461 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-226-9461. Primary manufacturer part number: 4038.
Features
  • Thumbscrew — FSC 5305
  • Thread Length: 0.625 INCHES NOMINAL IN
  • Thread Series Designator: UNF
  • Thread Class: 2A A
  • Head Style: KNURLED NO. 1
  • Point Style: FLAT
  • Head Height: 0.188 INCHES NOMINAL IN
  • Head Diameter: 0.375 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Thumbscrew, cataloged under National Stock Number 5305-01-226-9461, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-01-226-9461
Primary Part Number4038
Item NameThumbscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusCANCELLED
Thread Length0.625 INCHES NOMINAL IN
Thread Series DesignatorUNF
Thread Class2A A
Head StyleKNURLED NO. 1
Point StyleFLAT
Head Height0.188 INCHES NOMINAL IN
Head Diameter0.375 INCHES NOMINAL IN
MaterialSTEEL COMP 303 OVERALL
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch32
Nominal Thread Diameter0.190 INCHES IN
Fastener Length0.750 INCHES NOMINAL IN
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-149-987821329-632-9 INTERCHANGEABLE
Screw,machine
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5905-00-161-717691J2R2 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5945-00-176-475021748 INTERCHANGEABLE
Solenoid,electrical
Eaton Aerospace Llc
6645-00-225-27344038 INTERCHANGEABLE
Wheel,center
Wakmann Watch Company Inc
5130-00-234-48774038 INTERCHANGEABLE
Wrench,impact,pneumatic
Sioux Tools Inc
5999-00-283-399816T1879 INTERCHANGEABLE
Cap,electrical
Chief of Engineers Dept of Army
5950-00-647-5830292-1061G1 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon Co
2520-01-253-05594038 INTERCHANGEABLE
Cooler,fluid,transmission
Windham Lifts Inc
3020-01-389-9048 INTERCHANGEABLE
Sprocket Wheel
5120-01-428-4724 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
4038 Roller Bearing Co of America, Inc Div Pic Design (USA)
PQ-29-3 W. M. Berg, Inc. (USA)
Related Parts
5305-00-149-9878INTERCHANGEABLE
SCREW,MACHINE
21329-632-9
5905-00-161-7176INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
91J2R2
5945-00-176-4750INTERCHANGEABLE
SOLENOID,ELECTRICAL
21748
6645-00-225-2734INTERCHANGEABLE
WHEEL,CENTER
4038
5130-00-234-4877INTERCHANGEABLE
WRENCH,IMPACT,PNEUMATIC
4038
5999-00-283-3998INTERCHANGEABLE
CAP,ELECTRICAL
16T1879
5950-00-647-5830INTERCHANGEABLE
TRANSFORMER,POWER
292-1061G1
2520-01-253-0559INTERCHANGEABLE
COOLER,FLUID,TRANSMISSION
4038
3020-01-389-9048INTERCHANGEABLE
SPROCKET WHEEL
5120-01-428-4724INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5996-01-526-1720INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
4038
6625-01-569-1115INTERCHANGEABLE
ABSORBER,RADIO FREQUENCY RADIATI
4038

Frequently Asked Questions

What is NSN 5305-01-226-9461?

NSN 5305-01-226-9461 is a Thumbscrew, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-01-226-9461?

NSN 5305-01-226-9461 has 2 cross-referenced part numbers: 4038 (Roller Bearing Co of America, Inc Div Pic Design), PQ-29-3 (W. M. Berg, Inc.).

What NSN replaces 5305-01-226-9461?

There are 12 known substitutes for 5305-01-226-9461: 5305-00-149-9878, 5905-00-161-7176, 5945-00-176-4750 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4038?

Key specifications for 4038: Thread Length: 0.625 INCHES NOMINAL IN; Thread Series Designator: UNF; Thread Class: 2A A; Head Style: KNURLED NO. 1. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-01-226-9461 still in active supply?

NSN 5305-01-226-9461 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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