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Shift Knob Jam Nut : 3/8
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Shift Knob Jam Nut : 3/8

Shift Knob Jam Nut : 3/8"-24 for older Hurst shifters

$2.00 $2.99


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3/8"-24 knob thread
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  • Description

*** This nut is included with knobs we sell (where applicable) so do not buy this item unless you want a spare! ***

Jam nut for shifter knobs and handles with 3/8"-24 UNF "fine" thread:

  • Zinc-plated steel
    • Round upper portion w/ hex at bottom for wrench
      • 9/16" outside diameter (~ 14mm)
      • 9/16" across hex flats (~ 14mm)
      • 5/16" tall overall w/ 0.2" tall round portion
  • Equivalent to Hurst #1792244 & Year One MG003
  • Intended for aftermarket classic knobs & T-handles w/ ~1/8" recessed mount
    • NOT compatible with most OE knobs


This thread size is found on:

  • AFTERMARKET Hurst chrome sticks produced before ~1975
    • + Hurst Indy 3 speed shifters through present day
    • Does NOT FIT Hurst chrome sticks produced since 1975 (= 3/8"-16)
    • Does NOT FIT Hurst aluminum or black sticks (thread size varies)
  • The following manual trans applications in OE configuration:
    • Buick, Olds, Mopar, & AMC w/ FACTORY Hurst shifters to 1972
    • Other OE AMC & Jeep CJ (1979 w/ 3 spd & 1955-1979 w/ 4 spd)
    • Most Ford trucks to 1981
    • Most GM & Dodge trucks to ~1987
  • Does NOT FIT:
    • Chevy, Pontiac, or Ford cars
    • GM cars after 1972
    • 1980+ Jeep
    • "non-Hurst" GM factory shifters (Muncie = 5/16"-18)
  • Other sizes available