PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1227B496Nut,plain,slotted,hexagon

Kenworth Truck Co a Div of Paccar Inc · NSN 5310-00-492-9631 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-492-9631 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-492-9631. Primary manufacturer part number: 1227B496.
Features
  • Nut,plain,slotted,hexagon — FSC 5310
  • Nut Style: SLOTTED, HEXAGON
  • Nominal Thread Size: 1.250 INCHES IN
  • Thread Series: UNEF
  • Thread Quantity Per Inch: 18
  • Bearing Surface Type: CHAMFERED
  • Countersink Angle: 90.0 DEGREES NOMINAL NUT
  • Thread Class: 3B
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1211 or Steel Comp 4032 or Steel Comp 1213 or Steel Comp 1109 or Steel Comp 1117 or Steel Comp 1118 or Steel Comp 1120 Overall construction
General Description

The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-00-492-9631, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kenworth Truck Co a Div of Paccar Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 28 commercial cross-references from 23 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-492-9631
Primary Part Number1227B496
Item NameNut,plain,slotted,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerKenworth Truck Co a Div of Paccar Inc
StatusCANCELLED
Nut StyleSLOTTED, HEXAGON
Nominal Thread Size1.250 INCHES IN
Thread SeriesUNEF
Thread Quantity Per Inch18
Bearing Surface TypeCHAMFERED
Countersink Angle90.0 DEGREES NOMINAL NUT
Thread Class3B
MaterialSTEEL COMP 1211 OR STEEL COMP 4032 OR STEEL COMP 1213 OR STEEL COMP 1109 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1120 OVERALL
Nut Height0.625 INCHES NOMINAL IN
Material Document and ClassificationAISI ASSN STD 2ND MATERIAL RESPONSE OR QQ-S-637 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-637 FED SPEC 6TH MATERIAL RESPONSE OVERALL
Width Across Flats2.125 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-099-4293162-78 INTERCHANGEABLE
Bumper Assembly,indicator
Horizon Aerospace Llc Dba Magnetics Division
6635-00-119-9421P107 INTERCHANGEABLE
Compaction Cylinder,soil
Ele International, Llc Dba Soiltest Products
3455-00-189-91471-1561-0750 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
New York Twist Drill Inc
5815-00-240-9520145930 INTERCHANGEABLE
Teletypewriter Subassembly
Lucent Technologies Inc Corporate Headquarters
5935-00-241-40052200-3112558PC19 INTERCHANGEABLE
Connector,receptacle,electrical
Naval Ship Systems Command
8145-00-345-1022P107 INTERCHANGEABLE
Shipping and Storage Container P
Naval Inventory Control Point
5360-00-430-105618D146 INTERCHANGEABLE
Spring,helical,compression
Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc
5310-00-485-00581227B496 INTERCHANGEABLE
Nut,castle
Meritor Industrial Products, Llc
5365-00-544-5222145930 INTERCHANGEABLE
Bushing,inter,impel
Curtiss-Wright Controls, Inc. Div Actuation Division
2910-00-832-012216278 INTERCHANGEABLE
Arm Assembly Pump
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
16278 Kaitlin Corp (USA)
5143813 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
1227B496 PRIMARY Kenworth Truck Co a Div of Paccar Inc (USA)
16278 PRIMARY Kenworth Truck Co a Div of Paccar Inc (USA)
16278 Meritor Heavy Vehicle Systems, Llc (USA)
P107 PRIMARY Bae Systems Land & Armaments L.p. (USA)
16278 Corbitt Co Inc (USA)
322189 Daf Trucks N.v. (NLD)
40264V Navistar International Corporation Dba Navistar (USA)
11024H Navistar Intl Corp Truck Br Ohio Plant (USA)
P107 Fmc Corp (USA)
A143813 PRIMARY Mack Trucks Inc Parts Opn (USA)
1227B496C Meritor Industrial Products, Llc (USA)
P107 Amz Alabama Inc. (USA)
40264V PRIMARY Navistar Intl Corp Truck Br Ohio Plant (USA)
SRS5143813 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
5143813 PRIMARY Mack Trucks Inc Parts Opn (USA)
145930 Brockway Motor Trucks Div of Mack Trucks Inc (USA)
295706 General Motors Llc Dba General Motors Llc (USA)
1227B496C Meritor Heavy Vehicle Systems, Llc (USA)
Related Parts
6685-00-099-4293INTERCHANGEABLE
BUMPER ASSEMBLY,INDICATOR
162-78
6635-00-119-9421INTERCHANGEABLE
COMPACTION CYLINDER,SOIL
P107
3455-00-189-9147INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
1-1561-0750
5815-00-240-9520INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
145930
5935-00-241-4005INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2200-3112558PC19
8145-00-345-1022INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER P
P107
5360-00-430-1056INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
18D146
5310-00-485-0058INTERCHANGEABLE
NUT,CASTLE
1227B496
5365-00-544-5222INTERCHANGEABLE
BUSHING,INTER,IMPEL
145930
2910-00-832-0122INTERCHANGEABLE
ARM ASSEMBLY PUMP
16278
5962-01-178-8000INTERCHANGEABLE
MICROCIRCUIT
6605-01-191-4917INTERCHANGEABLE
LAMP ASSEMBLY
132885

Frequently Asked Questions

What is NSN 5310-00-492-9631?

NSN 5310-00-492-9631 is a Nut,plain,slotted,hexagon, manufactured by Kenworth Truck Co a Div of Paccar Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-492-9631?

NSN 5310-00-492-9631 has 28 cross-referenced part numbers: 16278 (Kaitlin Corp), 5143813 (U S Army Tank Automotive Command Amsta-Im-Mm), 1227B496 (Kenworth Truck Co a Div of Paccar Inc), 16278 (Kenworth Truck Co a Div of Paccar Inc), 16278 (Meritor Heavy Vehicle Systems, Llc) and 23 more.

What NSN replaces 5310-00-492-9631?

There are 12 known substitutes for 5310-00-492-9631: 6685-00-099-4293, 6635-00-119-9421, 3455-00-189-9147 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1227B496?

Key specifications for 1227B496: Nut Style: SLOTTED, HEXAGON; Nominal Thread Size: 1.250 INCHES IN; Thread Series: UNEF; Thread Quantity Per Inch: 18. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-492-9631 still in active supply?

NSN 5310-00-492-9631 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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