PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

784-8-20Screw,machine

The Boeing Company Div Legacy Am&m · NSN 5305-00-144-3726 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-144-3726 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-144-3726. Primary manufacturer part number: 784-8-20.
Features
  • Screw,machine — FSC 5305
  • Head Diameter: 0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
  • Fastener Length: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
  • Screw Surface Treatment: CADMIUM
  • Thread Direction: RIGHT-HAND
  • Head Style: ROUND
  • Internal Drive Style: CROSS RECESS TYPE 1
  • Head Height: 0.120 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-144-3726, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, 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
NSN5305-00-144-3726
Primary Part Number784-8-20
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerThe Boeing Company Div Legacy Am&m
StatusACTIVE
Head Diameter0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
Fastener Length1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
Screw Surface TreatmentCADMIUM
Thread DirectionRIGHT-HAND
Head StyleROUND
Internal Drive StyleCROSS RECESS TYPE 1
Head Height0.120 INCHES MAXIMUM IN
Nominal Thread Diameter0.164 INCHES IN
Thread Length1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
Thread Quantity Per Inch32
Screw MaterialSTEEL
Thread Class2A A
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-144-37221027301-8-12 INTERCHANGEABLE
Screw,machine
The Boeing Company
5305-00-144-37291177-8-32 INTERCHANGEABLE
Screw,machine
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5305-00-144-3782 INTERCHANGEABLE
Screw,machine
5305-00-150-9506 INTERCHANGEABLE
Screw,machine
5305-00-151-0762 INTERCHANGEABLE
Screw,machine
5305-00-151-0765 INTERCHANGEABLE
Screw,machine
5305-00-151-0977 INTERCHANGEABLE
Screw,machine
5305-00-151-0981 INTERCHANGEABLE
Screw,machine
5305-00-151-0983 INTERCHANGEABLE
Screw,machine
5305-00-151-1357 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
784-8-20 PRIMARY The Boeing Company Div Legacy Am&m (USA)
AN515-8R20 Aeronautical Standards Group Dept of Navy and Air Force (USA)
1177-8-20 PRIMARY Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
1027301-8-20 PRIMARY The Boeing Company (USA)
FFS92ANDTYPE3STYLE1C Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1027301-8-20 The Boeing Company (USA)
Related Parts
5305-00-144-3722INTERCHANGEABLE
SCREW,MACHINE
1027301-8-12
5305-00-144-3729INTERCHANGEABLE
SCREW,MACHINE
1177-8-32
5305-00-144-3782INTERCHANGEABLE
SCREW,MACHINE
5305-00-150-9506INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0762INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0765INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0977INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0981INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-0983INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-1357INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-1359INTERCHANGEABLE
SCREW,MACHINE
5305-00-151-1360INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5305-00-144-3726?

NSN 5305-00-144-3726 is a Screw,machine, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-144-3726?

NSN 5305-00-144-3726 has 6 cross-referenced part numbers: 784-8-20 (The Boeing Company Div Legacy Am&m), AN515-8R20 (Aeronautical Standards Group Dept of Navy and Air Force), 1177-8-20 (Naval Air Warfare Center Aircraft Division Joint Base Jbmdl), 1027301-8-20 (The Boeing Company), FFS92ANDTYPE3STYLE1C (Federal Specifications Promulgated by General Services Administration Washington DC) and 1 more.

What NSN replaces 5305-00-144-3726?

There are 12 known substitutes for 5305-00-144-3726: 5305-00-144-3722, 5305-00-144-3729, 5305-00-144-3782 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 784-8-20?

Key specifications for 784-8-20: Head Diameter: 0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN; Fastener Length: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN; Screw Surface Treatment: CADMIUM; Thread Direction: RIGHT-HAND. 13 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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