PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20377Screw,machine

Langley Corp · NSN 5305-00-786-3258 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-786-3258 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-786-3258. Primary manufacturer part number: 20377.
Features
  • Screw,machine — FSC 5305
  • Head Hole Configuration Style: ROUND
  • Internal Drive Style: SLOT
  • Hole Quantity: 1
  • Head Style: PAN NO. 2
  • Hole Diameter: 0.050 INCHES NOMINAL IN
  • Screw Material Document and Classification: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-786-3258, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Langley Corp. 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-786-3258
Primary Part Number20377
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerLangley Corp
StatusACTIVE
Head Hole Configuration StyleROUND
Internal Drive StyleSLOT
Hole Quantity1
Head StylePAN NO. 2
Hole Diameter0.050 INCHES NOMINAL IN
Screw Material Document and ClassificationQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE
Thread DirectionRIGHT-HAND
Head Diameter0.370 INCHES NOMINAL IN
Thread Class2A A
Head Height0.150 INCHES NOMINAL IN
Fastener Length0.310 INCHES NOMINAL IN
Screw MaterialSTEEL COMP 303
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Screw Surface TreatmentPASSIVATE
Nominal Thread Diameter0.164 INCHES IN
Thread Length0.298 INCHES MINIMUM IN
Thread Quantity Per Inch32
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5841-00-090-359120377 INTERCHANGEABLE
Guard
Raytheon Company Dba Raytheon
2520-00-110-864364A98C238-1 INTERCHANGEABLE
Universal Joint,vehicular
Naval Sea Systems Command
6130-00-232-522120377 INTERCHANGEABLE
Rectifier,metallic
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
3455-01-046-148650-10622 4533-G INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
2815-01-393-462520377 INTERCHANGEABLE
Cylinder Sleeve
Deutz Corporation
Cross-Reference Index
Part NumberManufacturer
20377 Langley Corp (USA)
Related Parts
5841-00-090-3591INTERCHANGEABLE
GUARD
20377
2520-00-110-8643INTERCHANGEABLE
UNIVERSAL JOINT,VEHICULAR
64A98C238-1
6130-00-232-5221INTERCHANGEABLE
RECTIFIER,METALLIC
20377
3455-01-046-1486INTERCHANGEABLE
REAMER,MACHINE
50-10622 4533-G
2815-01-393-4625INTERCHANGEABLE
CYLINDER SLEEVE
20377

Frequently Asked Questions

What is NSN 5305-00-786-3258?

NSN 5305-00-786-3258 is a Screw,machine, manufactured by Langley Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-786-3258?

NSN 5305-00-786-3258 has 1 cross-referenced part number: 20377 (Langley Corp).

What NSN replaces 5305-00-786-3258?

There are 5 known substitutes for 5305-00-786-3258: 5841-00-090-3591, 2520-00-110-8643, 6130-00-232-5221 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20377?

Key specifications for 20377: Head Hole Configuration Style: ROUND; Internal Drive Style: SLOT; Hole Quantity: 1; Head Style: PAN NO. 2. 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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