PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

44056Screw,cap,socket Head

Safety Socket Llc · NSN 5305-01-591-5742 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-591-5742 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-591-5742. Primary manufacturer part number: 44056.
Features
  • Screw,cap,socket Head — FSC 5305
  • Fastener Length: 0.675 INCHES NOMINAL IN
  • Thread Length: 0.675 INCHES NOMINAL IN
  • Head Diameter: 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
  • Internal Drive Style: HEXAGON
  • Nominal Thread Diameter: 0.164 INCHES IN
  • Head Style: PAN NO. 2
  • Thread Class: 3A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-591-5742, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Safety Socket Llc. 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-591-5742
Primary Part Number44056
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerSafety Socket Llc
StatusACTIVE
Fastener Length0.675 INCHES NOMINAL IN
Thread Length0.675 INCHES NOMINAL IN
Head Diameter0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
Internal Drive StyleHEXAGON
Nominal Thread Diameter0.164 INCHES IN
Head StylePAN NO. 2
Thread Class3A A
Thread Quantity Per Inch32
Thread DirectionRIGHT-HAND
Head Height0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN
Width Across Flats0.141 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Thread Series DesignatorUNRC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5315-00-445-574144056 INTERCHANGEABLE
Pin,coupling
Jenny Products, Inc
5330-00-616-7625 INTERCHANGEABLE
Seal,nonmetallic Special Shaped
4730-00-801-103944056 INTERCHANGEABLE
Strainer Element,sediment
Leslie Controls, Inc. Dba Leslie Controls Inc
5305-00-866-115744056 INTERCHANGEABLE
Screw,externally Relieved Body
L3harris Technologies, Inc Div Space & Airborne Systems
3610-01-061-93174-4056 INTERCHANGEABLE
Cover,roller
Abd Intl Inc Dba Abdick
5340-01-211-493944056 INTERCHANGEABLE
Latch,mortise
Cleveland Range, Llc
5120-01-335-0777 INTERCHANGEABLE
Socket,socket Wrench
5360-01-340-814344056 INTERCHANGEABLE
Spring,helical,compression
Bourns Inc
5950-01-363-3352G504205-8 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
44056 PRIMARY Safety Socket Llc (USA)
Related Parts
5315-00-445-5741INTERCHANGEABLE
PIN,COUPLING
44056
5330-00-616-7625INTERCHANGEABLE
SEAL,NONMETALLIC SPECIAL SHAPED
4730-00-801-1039INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
44056
5305-00-866-1157INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
44056
3610-01-061-9317INTERCHANGEABLE
COVER,ROLLER
4-4056
5340-01-211-4939INTERCHANGEABLE
LATCH,MORTISE
44056
5120-01-335-0777INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5360-01-340-8143INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
44056
5950-01-363-3352INTERCHANGEABLE
COIL,RADIO FREQUENCY
G504205-8

Frequently Asked Questions

What is NSN 5305-01-591-5742?

NSN 5305-01-591-5742 is a Screw,cap,socket Head, manufactured by Safety Socket Llc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-591-5742?

NSN 5305-01-591-5742 has 1 cross-referenced part number: 44056 (Safety Socket Llc).

What NSN replaces 5305-01-591-5742?

There are 9 known substitutes for 5305-01-591-5742: 5315-00-445-5741, 5330-00-616-7625, 4730-00-801-1039 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 44056?

Key specifications for 44056: Fastener Length: 0.675 INCHES NOMINAL IN; Thread Length: 0.675 INCHES NOMINAL IN; Head Diameter: 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Part Name Assigned by Controlling Agency: SOCKET HEAD CAP SCREW. 15 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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