PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4034Thumbscrew

Roller Bearing Co of America, Inc Div Pic Design · NSN 5305-00-421-2025 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-421-2025 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-421-2025. Primary manufacturer part number: 4034.
Features
  • Thumbscrew — FSC 5305
  • Head Height: 0.188 INCHES NOMINAL IN
  • Thread Class: 2A A
  • Thread Length: 0.812 INCHES MINIMUM IN
  • Material Document and Classification: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Thread Quantity Per Inch: 24
  • Nominal Thread Diameter: 0.190 INCHES IN
  • Material: STEEL COMP 303 OVERALL
Applications
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Thumbscrew, cataloged under National Stock Number 5305-00-421-2025, 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-421-2025
Primary Part Number4034
Item NameThumbscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
Head Height0.188 INCHES NOMINAL IN
Thread Class2A A
Thread Length0.812 INCHES MINIMUM IN
Material Document and ClassificationQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Quantity Per Inch24
Nominal Thread Diameter0.190 INCHES IN
MaterialSTEEL COMP 303 OVERALL
Point StyleFLAT
Head StyleKNURLED NO. 1
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Fastener Length1.000 INCHES NOMINAL IN
Head Diameter0.750 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5998-00-057-27174034 INTERCHANGEABLE
Electronic Components Assembly
The Bechdon Company, Llc
5975-00-153-6396 INTERCHANGEABLE
Junction Box
5136-00-189-3217402274 INTERCHANGEABLE
Die,thread Cutting
Greenfield Industries Inc
5940-00-204-9168227-1021P2 INTERCHANGEABLE
Terminal,lug
Raytheon Company Dba Raytheon Co
5331-00-248-3842MS29513-017 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5985-00-324-58084034C INTERCHANGEABLE
Coupler,transmission Line
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
3120-00-326-4527 INTERCHANGEABLE
Bushing,sleeve
5330-00-530-41014034 INTERCHANGEABLE
Gasket
King Engineering Corporation Dba King-Gage Systems
2805-00-713-7079L2040F INTERCHANGEABLE
Piston,internal Combustion Engin
Trw Inc Trw Steering and Suspension Div
5910-00-915-3516148-0004-001 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Viking Technologies, Ltd.
Cross-Reference Index
Part NumberManufacturer
4034 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
Related Parts
5998-00-057-2717INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
4034
5975-00-153-6396INTERCHANGEABLE
JUNCTION BOX
5136-00-189-3217INTERCHANGEABLE
DIE,THREAD CUTTING
402274
5940-00-204-9168INTERCHANGEABLE
TERMINAL,LUG
227-1021P2
5331-00-248-3842INTERCHANGEABLE
O-RING
MS29513-017
5985-00-324-5808INTERCHANGEABLE
COUPLER,TRANSMISSION LINE
4034C
3120-00-326-4527INTERCHANGEABLE
BUSHING,SLEEVE
5330-00-530-4101INTERCHANGEABLE
GASKET
4034
2805-00-713-7079INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
L2040F
5910-00-915-3516INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
148-0004-001
5330-00-983-0555INTERCHANGEABLE
SEAL,PLAIN ENCASED
509297
5905-01-014-9785INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
91J1R5

Frequently Asked Questions

What is NSN 5305-00-421-2025?

NSN 5305-00-421-2025 is a Thumbscrew, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-421-2025?

NSN 5305-00-421-2025 has 1 cross-referenced part number: 4034 (Roller Bearing Co of America, Inc Div Pic Design).

What NSN replaces 5305-00-421-2025?

There are 12 known substitutes for 5305-00-421-2025: 5998-00-057-2717, 5975-00-153-6396, 5136-00-189-3217 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4034?

Key specifications for 4034: Head Height: 0.188 INCHES NOMINAL IN; Thread Class: 2A A; Thread Length: 0.812 INCHES MINIMUM IN; Material Document and Classification: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com