PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

104991Screw,machine

Lucent Technologies Inc Corporate Headquarters · NSN 5305-00-527-3918 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-527-3918 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-527-3918. Primary manufacturer part number: 104991.
Features
  • Screw,machine — FSC 5305
  • Features Provided: CASEHARDENED
  • Thread Quantity Per Inch: 56
  • Fastener Length: 0.500 INCHES NOMINAL IN
  • Screw Material: IRON
  • Thread Length: 0.500 INCHES MAXIMUM IN
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Head Diameter: 0.132 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-527-3918, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lucent Technologies Inc Corporate Headquarters. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-527-3918
Primary Part Number104991
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusACTIVE
Features ProvidedCASEHARDENED
Thread Quantity Per Inch56
Fastener Length0.500 INCHES NOMINAL IN
Screw MaterialIRON
Thread Length0.500 INCHES MAXIMUM IN
Internal Drive StyleCROSS RECESS TYPE 1
Head Diameter0.132 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Class3A A
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.086 INCHES IN
Head StyleFILLISTER
Screw Surface TreatmentZINC
Head Height0.547 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6610-00-126-6115104991 INTERCHANGEABLE
Mask,optical Prism
Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace
3110-00-156-7932314747-1 INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
4130-01-175-1244104991 INTERCHANGEABLE
Dasher,ice Cream Machine
M D Holdings Llc Dba Saniserv
Cross-Reference Index
Part NumberManufacturer
104991 Lucent Technologies Inc Dba Federal Marketing Group (USA)
104991 At and T Corp (USA)
104991 PRIMARY Lucent Technologies Inc Corporate Headquarters (USA)
104991 American Telephone and Telegraph Co (USA)
104991 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
6610-00-126-6115INTERCHANGEABLE
MASK,OPTICAL PRISM
104991
3110-00-156-7932INTERCHANGEABLE
BEARING,BALL,ANNULAR
314747-1
4130-01-175-1244INTERCHANGEABLE
DASHER,ICE CREAM MACHINE
104991

Frequently Asked Questions

What is NSN 5305-00-527-3918?

NSN 5305-00-527-3918 is a Screw,machine, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-527-3918?

NSN 5305-00-527-3918 has 5 cross-referenced part numbers: 104991 (Lucent Technologies Inc Dba Federal Marketing Group), 104991 (At and T Corp), 104991 (Lucent Technologies Inc Corporate Headquarters), 104991 (American Telephone and Telegraph Co), 104991 (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 5305-00-527-3918?

There are 3 known substitutes for 5305-00-527-3918: 6610-00-126-6115, 3110-00-156-7932, 4130-01-175-1244. Verify interchangeability with system specifications before substitution.

What are the specifications of 104991?

Key specifications for 104991: Features Provided: CASEHARDENED; Thread Quantity Per Inch: 56; Fastener Length: 0.500 INCHES NOMINAL IN; Screw Material: IRON. 14 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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