PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4451Screw,shoulder

Roller Bearing Co of America, Inc Div Pic Design · NSN 5305-00-003-6790 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-003-6790 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-003-6790. Primary manufacturer part number: 4451.
Features
  • Screw,shoulder — FSC 5305
  • Shoulder Diameter: 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM FIRST SHOULDER IN
  • Shoulder Length: 0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM FIRST SHOULDER IN
  • Thread Quantity Per Inch: 16
  • Width Across Flats: 0.250 INCHES NOMINAL IN
  • Thread Length: 0.625 INCHES MINIMUM IN
  • Fastener Length: 1.125 INCHES NOMINAL IN
  • Surface Treatment: PASSIVATE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Screw,shoulder, cataloged under National Stock Number 5305-00-003-6790, 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 17 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
NSN5305-00-003-6790
Primary Part Number4451
Item NameScrew,shoulder
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
Shoulder Diameter0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM FIRST SHOULDER IN
Shoulder Length0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM FIRST SHOULDER IN
Thread Quantity Per Inch16
Width Across Flats0.250 INCHES NOMINAL IN
Thread Length0.625 INCHES MINIMUM IN
Fastener Length1.125 INCHES NOMINAL IN
Surface TreatmentPASSIVATE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Shoulder ShapeROUND FIRST SHOULDER
Head StyleFLAT CHAMFER
Thread Class2A A
Head Height0.312 INCHES NOMINAL IN
MaterialSTEEL COMP 303 OVERALL
Thread DirectionRIGHT-HAND
Head Diameter0.750 INCHES NOMINAL IN
Nominal Thread Diameter0.375 INCHES IN
Internal Drive StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-020-8387 INTERCHANGEABLE
Transmitter,temperature,electric
5365-00-142-287710288-8 INTERCHANGEABLE
Plug,machine Thread
Cummins Inc.
5330-00-238-7951 INTERCHANGEABLE
Gasket
5120-00-293-2057250SB1 INTERCHANGEABLE
Bit,screwdriver
Qualtool Inc
2990-00-301-6533445IN INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
4130-00-359-7079S18-527A INTERCHANGEABLE
Valve
Thermo King Corporation Dba Phoenix Global Distirbution.
6760-00-397-9651601130 INTERCHANGEABLE
Screen,aerial Image,focusing
Polaroid Corporation Dba Polaroid
5360-00-527-1063 INTERCHANGEABLE
Spring,helical,compression
5930-00-548-9069SCB61726 INTERCHANGEABLE
Switch Assembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6685-00-930-0601G251A36S INTERCHANGEABLE
Thermocouple
Emerson Electric Co White Rodgers Co Div
Cross-Reference Index
Part NumberManufacturer
4451 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
Related Parts
6685-00-020-8387INTERCHANGEABLE
TRANSMITTER,TEMPERATURE,ELECTRIC
5365-00-142-2877INTERCHANGEABLE
PLUG,MACHINE THREAD
10288-8
5330-00-238-7951INTERCHANGEABLE
GASKET
5120-00-293-2057INTERCHANGEABLE
BIT,SCREWDRIVER
250SB1
2990-00-301-6533INTERCHANGEABLE
MUFFLER,EXHAUST
445IN
4130-00-359-7079INTERCHANGEABLE
VALVE
S18-527A
6760-00-397-9651INTERCHANGEABLE
SCREEN,AERIAL IMAGE,FOCUSING
601130
5360-00-527-1063INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5930-00-548-9069INTERCHANGEABLE
SWITCH ASSEMBLY
SCB61726
6685-00-930-0601INTERCHANGEABLE
THERMOCOUPLE
G251A36S
5905-00-994-7192INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
995-3A8200
5305-01-104-5890INTERCHANGEABLE
SCREW,SHOULDER

Frequently Asked Questions

What is NSN 5305-00-003-6790?

NSN 5305-00-003-6790 is a Screw,shoulder, 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 5305-00-003-6790?

NSN 5305-00-003-6790 has 1 cross-referenced part number: 4451 (Roller Bearing Co of America, Inc Div Pic Design).

What NSN replaces 5305-00-003-6790?

There are 12 known substitutes for 5305-00-003-6790: 6685-00-020-8387, 5365-00-142-2877, 5330-00-238-7951 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4451?

Key specifications for 4451: Shoulder Diameter: 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Length: 0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM FIRST SHOULDER IN; Thread Quantity Per Inch: 16; Width Across Flats: 0.250 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.

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