PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1273Screw,cap,hexagon Head

Eaton Aerospace, Llc Dba Jackson South · NSN 5305-00-276-8457 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-276-8457 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-276-8457. Primary manufacturer part number: 1273.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Nominal Thread Diameter: 0.375 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Thread Series Designator: UNF
  • Material: STEEL COMP 4140 OVERALL
  • Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Thread Length: 1.000 INCHES MINIMUM IN
  • Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-276-8457, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5305-00-276-8457
Primary Part Number1273
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
Nominal Thread Diameter0.375 INCHES IN
Thread DirectionRIGHT-HAND
Thread Series DesignatorUNF
MaterialSTEEL COMP 4140 OVERALL
Material Document and ClassificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Length1.000 INCHES MINIMUM IN
Head Height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
Fastener Length1.250 INCHES NOMINAL IN
Thread Quantity Per Inch24
Head StyleHEXAGON
Thread Class3A A
Width Between Flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-144-9004060-11 INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
5310-00-208-1919 INTERCHANGEABLE
Nut,self-Locking,hexagon
3110-00-275-02391828S71 INTERCHANGEABLE
Bearing,ball,thrust
Meritor Heavy Vehicle Systems, Llc
6685-00-425-51416N4540 INTERCHANGEABLE
Thermostat,flow Control
Caterpillar Inc Div Caterpillar Defense
3120-00-513-48011273 INTERCHANGEABLE
Bearing,plain,rod End
Goodrich Corporation
5975-00-644-0236E1028-73-10 INTERCHANGEABLE
Protector,electrical Cable
Breeze-Eastern Llc
5905-00-777-8326 INTERCHANGEABLE
Resistor,fixed,wire Wound
4330-01-004-7904A33690 INTERCHANGEABLE
Filter
Leslie Controls, Inc. Dba Leslie Controls Inc
5935-01-028-172133-096-BU INTERCHANGEABLE
Jack,telephone
Gc/waldom Inc
5975-01-065-2264BUC-75 INTERCHANGEABLE
Bushing,electrical Conduit
Egs Electrical Group Appleton Div
Cross-Reference Index
Part NumberManufacturer
7D1273 Fwd Seagrave Holdings Lp (USA)
1273 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
33690 Allianz Sweeper Company (USA)
Related Parts
3110-00-144-9004INTERCHANGEABLE
BEARING,BALL,ANNULAR
060-11
5310-00-208-1919INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
3110-00-275-0239INTERCHANGEABLE
BEARING,BALL,THRUST
1828S71
6685-00-425-5141INTERCHANGEABLE
THERMOSTAT,FLOW CONTROL
6N4540
3120-00-513-4801INTERCHANGEABLE
BEARING,PLAIN,ROD END
1273
5975-00-644-0236INTERCHANGEABLE
PROTECTOR,ELECTRICAL CABLE
E1028-73-10
5905-00-777-8326INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
4330-01-004-7904INTERCHANGEABLE
FILTER
A33690
5935-01-028-1721INTERCHANGEABLE
JACK,TELEPHONE
33-096-BU
5975-01-065-2264INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
BUC-75
5940-01-097-0264INTERCHANGEABLE
TERMINAL STRIP,GROUNDING
1273
4140-01-236-2930INTERCHANGEABLE
IMPELLER,FAN,AXIAL
1273

Frequently Asked Questions

What is NSN 5305-00-276-8457?

NSN 5305-00-276-8457 is a Screw,cap,hexagon Head, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-276-8457?

NSN 5305-00-276-8457 has 3 cross-referenced part numbers: 7D1273 (Fwd Seagrave Holdings Lp), 1273 (Eaton Aerospace, Llc Dba Jackson South), 33690 (Allianz Sweeper Company).

What NSN replaces 5305-00-276-8457?

There are 12 known substitutes for 5305-00-276-8457: 3110-00-144-9004, 5310-00-208-1919, 3110-00-275-0239 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1273?

Key specifications for 1273: Nominal Thread Diameter: 0.375 INCHES IN; Thread Direction: RIGHT-HAND; Thread Series Designator: UNF; Material: STEEL COMP 4140 OVERALL. 12 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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