This Allstar Performance jam nut assortment kit includes five each of seven common left hand thread sizes: 1/4-20, 5/16-24, 3/8-24, 7/16-20, 1/2-20, 5/8-18, and 3/4-16. That is 35 jam nuts total in one kit, useful for keeping a range of left hand thread sizes on hand for rod ends, radius rods, and other threaded adjustments.
Nuts are steel with a zinc oxide finish. Part number ALL18291.
Allstar Performance Jam Nut Assortment Spec Sheet (PDF)
Specifications
- Thread Direction: Left Hand
- Material: Steel
- Finish: Zinc Oxide
- Contents: 5 each of 1/4-20, 5/16-24, 3/8-24, 7/16-20, 1/2-20, 5/8-18, and 3/4-16 (35 nuts total)
- Wrench Sizes: 1/2 in (5/16-24), 9/16 in (3/8-24), 11/16 in (7/16-20), 3/4 in (1/2-20), 15/16 in (5/8-18), 1-1/8 in (3/4-16)
- Part Number: ALL18291
FAQ
What thread sizes are included in this assortment?
This kit includes 1/4-20, 5/16-24, 3/8-24, 7/16-20, 1/2-20, 5/8-18, and 3/4-16, all in left hand thread.
How many jam nuts come in this kit?
This kit includes five of each of the seven thread sizes, for 35 jam nuts total.
What material and finish are these jam nuts?
These jam nuts are steel with a zinc oxide finish.
Is this kit right hand or left hand thread?
Part number ALL18291 is left hand thread.
What is a jam nut assortment used for?
A jam nut assortment keeps a range of common thread sizes on hand for locking rod ends, radius rods, and other threaded fasteners without needing to buy each size separately.

