PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-128Nut,self-Locking,single Ball Sea

Motorola Automotive Electronics · NSN 5310-00-173-0117 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-173-0117 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-173-0117. Primary manufacturer part number: 20-128.
Features
  • Nut,self-Locking,single Ball Sea — FSC 5310
  • Material: STEEL OVERALL
  • Thread Quantity Per Inch: 18
  • Nut Height: 0.547 INCHES NOMINAL IN
  • Nominal Thread Size: 0.625 INCHES IN
  • Thread Series: UNF
  • Width Across Flats: 0.928 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,single Ball Sea, cataloged under National Stock Number 5310-00-173-0117, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Motorola Automotive Electronics. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-173-0117
Primary Part Number20-128
Item NameNut,self-Locking,single Ball Sea
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMotorola Automotive Electronics
StatusACTIVE
MaterialSTEEL OVERALL
Thread Quantity Per Inch18
Nut Height0.547 INCHES NOMINAL IN
Nominal Thread Size0.625 INCHES IN
Thread SeriesUNF
Width Across Flats0.928 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Thread Class2B
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Nut StyleSINGLE BALL SEAT, HEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4310-00-097-0941 INTERCHANGEABLE
Head
5133-00-228-1377 INTERCHANGEABLE
Drill,twist
5930-00-263-6957S228-1028ISSUE3 INTERCHANGEABLE
Switch,sensitive
Raytheon Company Dba Raytheon Co
5360-01-076-286720-128 INTERCHANGEABLE
Spring
Stewart & Stevenson Power Products Llc
4820-01-202-960920128 INTERCHANGEABLE
Stop,valve,delivery
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5995-01-220-5602 INTERCHANGEABLE
Lead,electrical
4920-01-300-1917 INTERCHANGEABLE
Test Program Set
4820-01-333-026020128 INTERCHANGEABLE
Disk,valve
Stanadyne Corporation Dba Stanadyne Diesel Systems
3040-01-525-636720128 INTERCHANGEABLE
Spindle,mechanically Actuated
B.w. Elliott Manufacturing Co., Llc
2090-01-564-0038201-28 INTERCHANGEABLE
Bladder,accumulator,hydraulic
Blacoh Fluid Controls Inc
Cross-Reference Index
Part NumberManufacturer
20-128 PRIMARY Motorola Automotive Electronics (USA)
20-128 Motorola Inc. Dba Integrated Information Systems Group (USA)
Related Parts
4310-00-097-0941INTERCHANGEABLE
HEAD
5133-00-228-1377INTERCHANGEABLE
DRILL,TWIST
5930-00-263-6957INTERCHANGEABLE
SWITCH,SENSITIVE
S228-1028ISSUE3
5360-01-076-2867INTERCHANGEABLE
SPRING
20-128
4820-01-202-9609INTERCHANGEABLE
STOP,VALVE,DELIVERY
20128
5995-01-220-5602INTERCHANGEABLE
LEAD,ELECTRICAL
4920-01-300-1917INTERCHANGEABLE
TEST PROGRAM SET
4820-01-333-0260INTERCHANGEABLE
DISK,VALVE
20128
3040-01-525-6367INTERCHANGEABLE
SPINDLE,MECHANICALLY ACTUATED
20128
2090-01-564-0038INTERCHANGEABLE
BLADDER,ACCUMULATOR,HYDRAULIC
201-28
6695-01-732-6641INTERCHANGEABLE
TRANSDUCER,PRESSURE,FLUID-HYDRAU
20128

Frequently Asked Questions

What is NSN 5310-00-173-0117?

NSN 5310-00-173-0117 is a Nut,self-Locking,single Ball Sea, manufactured by Motorola Automotive Electronics, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-173-0117?

NSN 5310-00-173-0117 has 2 cross-referenced part numbers: 20-128 (Motorola Automotive Electronics), 20-128 (Motorola Inc. Dba Integrated Information Systems Group).

What NSN replaces 5310-00-173-0117?

There are 11 known substitutes for 5310-00-173-0117: 4310-00-097-0941, 5133-00-228-1377, 5930-00-263-6957 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-128?

Key specifications for 20-128: Material: STEEL OVERALL; Thread Quantity Per Inch: 18; Nut Height: 0.547 INCHES NOMINAL IN; Nominal Thread Size: 0.625 INCHES IN. 10 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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