PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C105CNut,plain,square

Hygrade Products Sub of Standard Motor Products Inc · NSN 5310-00-012-0619 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-012-0619 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-012-0619. Primary manufacturer part number: C105C.
Features
  • Nut,plain,square — FSC 5310
  • Nut Height: 0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Thread Quantity Per Inch: 20
  • Nominal Thread Size: 0.190 INCHES IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Bearing Surface Type: FLAT
  • Thread Class: 2B
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,square, cataloged under National Stock Number 5310-00-012-0619, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hygrade Products Sub of Standard Motor Products Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 14 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
NSN5310-00-012-0619
Primary Part NumberC105C
Item NameNut,plain,square
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHygrade Products Sub of Standard Motor Products Inc
StatusACTIVE
Nut Height0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch20
Nominal Thread Size0.190 INCHES IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Bearing Surface TypeFLAT
Thread Class2B
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OR ZINC OVERALL
Width Across Flats0.362 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
Nut StyleSQUARE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-010-3101103101 INTERCHANGEABLE
Nut,plain,square
Chrysler Realty Company Llc Dba Daimler Chrysler
5310-00-010-3102 INTERCHANGEABLE
Nut,plain,square
5310-00-010-3104103104 INTERCHANGEABLE
Nut,plain,square
Chrysler Realty Company Llc Dba Daimler Chrysler
5310-00-010-3105103105 INTERCHANGEABLE
Nut,plain,square
Chrysler Realty Company Llc Dba Daimler Chrysler
5310-00-011-4380114380 INTERCHANGEABLE
Nut,plain,square
Chrysler Realty Company Llc Dba Daimler Chrysler
5310-00-011-5984 INTERCHANGEABLE
Nut,plain,square
5310-00-012-0399120399 INTERCHANGEABLE
Nut,plain,square
Us Army Aviation and Missile Command
5310-00-012-0611120611 INTERCHANGEABLE
Nut,plain,square
Chrysler Realty Company Llc Dba Daimler Chrysler
5310-00-012-7797 INTERCHANGEABLE
Nut,plain,square
5310-00-013-1395131395 INTERCHANGEABLE
Nut,plain,square
Chrysler Realty Company Llc Dba Daimler Chrysler
Cross-Reference Index
Part NumberManufacturer
105A8 General Electric Company (USA)
JHP13-317 Hollingsworth John R Co (USA)
120619 Diamond Reo Truck Co (USA)
355858S Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
51-953-51 Kingston Div of Scott and Fetzer Co (USA)
120619 General Motors Corp (USA)
MILB933TYPEB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
C105C PRIMARY Hygrade Products Sub of Standard Motor Products Inc (USA)
120619 PRIMARY Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
105A8 Acf Industries Inc Carter Carburetor Div
39R171 Colt Industries Inc Holley Automotive Div (USA)
228A1-0113 Hollingsworth John R Co (USA)
355858S7 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
116219 PRIMARY Am General Llc (USA)
120619 General Motors Llc Dba General Motors Llc (USA)
7324843 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
5310-00-010-3101INTERCHANGEABLE
NUT,PLAIN,SQUARE
103101
5310-00-010-3102INTERCHANGEABLE
NUT,PLAIN,SQUARE
5310-00-010-3104INTERCHANGEABLE
NUT,PLAIN,SQUARE
103104
5310-00-010-3105INTERCHANGEABLE
NUT,PLAIN,SQUARE
103105
5310-00-011-4380INTERCHANGEABLE
NUT,PLAIN,SQUARE
114380
5310-00-011-5984INTERCHANGEABLE
NUT,PLAIN,SQUARE
5310-00-012-0399INTERCHANGEABLE
NUT,PLAIN,SQUARE
120399
5310-00-012-0611INTERCHANGEABLE
NUT,PLAIN,SQUARE
120611
5310-00-012-7797INTERCHANGEABLE
NUT,PLAIN,SQUARE
5310-00-013-1395INTERCHANGEABLE
NUT,PLAIN,SQUARE
131395
5310-00-013-4532INTERCHANGEABLE
NUT,PLAIN,SQUARE
5310-00-021-8562INTERCHANGEABLE
NUT,PLAIN,SQUARE

Frequently Asked Questions

What is NSN 5310-00-012-0619?

NSN 5310-00-012-0619 is a Nut,plain,square, manufactured by Hygrade Products Sub of Standard Motor Products Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-012-0619?

NSN 5310-00-012-0619 has 16 cross-referenced part numbers: 105A8 (General Electric Company), JHP13-317 (Hollingsworth John R Co), 120619 (Diamond Reo Truck Co), 355858S (Ford Motor Co Ford Parts and Service Div Government Part Sales), 51-953-51 (Kingston Div of Scott and Fetzer Co) and 11 more.

What NSN replaces 5310-00-012-0619?

There are 12 known substitutes for 5310-00-012-0619: 5310-00-010-3101, 5310-00-010-3102, 5310-00-010-3104 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C105C?

Key specifications for C105C: Nut Height: 0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND; Thread Quantity Per Inch: 20; Nominal Thread Size: 0.190 INCHES IN. 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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