PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1031378Turnbuckle

The Crosby Group Llc Dba the Crosby Group · NSN 5340-00-309-2375 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-309-2375 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-309-2375. Primary manufacturer part number: 1031378.
Features
  • Turnbuckle — FSC 5340
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) BODY
  • Length: 15.000 INCHES NOMINAL IN
  • Eye Width: 0.875 INCHES NOMINAL IN
  • Surface Treatment: ZINC OVERALL
  • End Style: CLOSED EYE AND CLOSED EYE
  • Material: STEEL COMP 1035 OVERALL
  • Body Style: HEX OPEN BODY
Applications
  • Applications requiring Steel Comp 1035 Overall construction
General Description

The Turnbuckle, cataloged under National Stock Number 5340-00-309-2375, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-309-2375
Primary Part Number1031378
Item NameTurnbuckle
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerThe Crosby Group Llc Dba the Crosby Group
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) BODY
Length15.000 INCHES NOMINAL IN
Eye Width0.875 INCHES NOMINAL IN
Surface TreatmentZINC OVERALL
End StyleCLOSED EYE AND CLOSED EYE
MaterialSTEEL COMP 1035 OVERALL
Body StyleHEX OPEN BODY
Nominal Thread Size0.625 INCHES BODY IN
Thread Class1B BODY
Nondefinitive Spec/std Data1 TEMPER AND 1 FORM AND 4 CLASS
Take-Up Distance6.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5340-00-187-8186ASTM F 1145-5 SUCCESSOR
Turnbuckle
Astm Institute for Standards Research (inc)
5340-00-150-4777ASTM-F1145-I1B 1/2X9 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-168-6315MS27120-10 SUCCESSOR
Clevis,rod End
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-179-9249MS27120-5 SUCCESSOR
Clevis,rod End
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-179-9250MS27954-3 SUCCESSOR
Turnbuckle Body
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-184-2783MS27120-8 SUCCESSOR
Clevis,rod End
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-187-8174ASTM-F1145-I1D 3/8X6 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-187-8176ASTM-F1145-I1D 1/2X9 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-187-8179ASTM-F1145-I1D 5/8X9 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
5340-00-187-8180ASTM-F1145-I1D 5/8X12 SUCCESSOR
Turnbuckle
American Society for Testing and Materials Dba Astm International
Cross-Reference Index
Part NumberManufacturer
G-226 Zf Industrieantriebe Witten Gmbh (DEU)
G226 The Crosby Group Llc Dba the Crosby Group (USA)
1031378 PRIMARY The Crosby Group Llc Dba the Crosby Group (USA)
FF-T-791 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5340-00-187-8186SUCCESSOR
TURNBUCKLE
ASTM F 1145-5
5340-00-150-4777SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1B 1/2X9
5340-00-168-6315SUCCESSOR
CLEVIS,ROD END
MS27120-10
5340-00-179-9249SUCCESSOR
CLEVIS,ROD END
MS27120-5
5340-00-179-9250SUCCESSOR
TURNBUCKLE BODY
MS27954-3
5340-00-184-2783SUCCESSOR
CLEVIS,ROD END
MS27120-8
5340-00-187-8174SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 3/8X6
5340-00-187-8176SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 1/2X9
5340-00-187-8179SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 5/8X9
5340-00-187-8180SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 5/8X12
5340-00-187-8184SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 1/4X4
5340-00-187-8192SUCCESSOR
TURNBUCKLE
ASTM-F1145-I1D 1X12

Frequently Asked Questions

What is NSN 5340-00-309-2375?

NSN 5340-00-309-2375 is a Turnbuckle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-309-2375?

NSN 5340-00-309-2375 has 4 cross-referenced part numbers: G-226 (Zf Industrieantriebe Witten Gmbh), G226 (The Crosby Group Llc Dba the Crosby Group), 1031378 (The Crosby Group Llc Dba the Crosby Group), FF-T-791 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5340-00-309-2375?

There are 12 known substitutes for 5340-00-309-2375: 5340-00-187-8186, 5340-00-150-4777, 5340-00-168-6315 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1031378?

Key specifications for 1031378: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) BODY; Length: 15.000 INCHES NOMINAL IN; Eye Width: 0.875 INCHES NOMINAL IN; Surface Treatment: ZINC OVERALL. 11 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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