Didn't see a locknut suited for your application? Have special requests such as Mil-Spec nuts, DFARs compliant nuts, RoHS compliant nuts, 100% domestic nuts, or special finishes? Click the Contact Us button below and allow us to assist!






Allen Nuts


Manufactured in the USA


12 point, hexagon, or special recess' available


422 sst, A286, Steel, Stainless and other alloys available


From 10-32 to 8", metrics and specials available





Chamfer-Top


The Chamfer-Top, or Automotive style lock nut, is a one piece, of an all metal construction


Excellent vibration resistance


Temperatures up to 1500F


Manufactured in 422 sst, A286, Steel, Stainless, Inconel, Monel, Titanium, and other alloys


M45913/2 ; M45913/4 ; DFARs compliant





Screw Machine Products


Precision Screw machines to run small, technical parts, in large volume


Spacers, Standoffs, Sex bolts, Machine Screws, Nuts, Eyelets


Manufactured to your specifications


Made in the USA

Fuji Lock


Used commonly in automotive and rail applications


​Excellent locknut for quick assembly


​Can be configured with domed cap, flange nut, or standard hexagon style

Products


A sample of SPC Threaded's products can be viewed below. Any locknut below can be provided to meet your application, or your special design can also be quoted. Metric or standard, coarse, fine, or special threads


Our self locking nuts can be made in Titanium, Aluminum, Inconel, Monel, 18-8 stainless, 316 stainless, Hastealloy, Nickel Alloys, Grade 8, Class 8, Class 10, Class 12, 17-4, H1025,H1150, Brass, and many more


Multiple inorganic and electro-deposited coatings available. Including Silver, Cadmium, Zinc, Nickel

Twelve Points


12 point nuts, locking and non-locking.


High-tensile, space saving design, with capabilities for extreme wrench torque


Exotic alloys, Inconel, A286, 422 stainless, 8740,H-11, Duplex steels, titanium


Conforming to NAS1805,NAS1804, GE# N271   N272


Manufactured in the USA


Metrics and specials, from 10-32 to 8"

Nylon Insert Locknut


Most suited locknut where high reliability is a must


Vibration resistance second to none


Temperatures up to 500F with Vespel ® high temperature insert


NE, NU, NTE, NTU, heavy, finish and thin patterns, Metrics and specials, from 00-80 to 8" nuts


Different grades of insert material available for different corrosive environments


​M45913/1    M45913/3    MS21044    MS17828   MS17829


FlexSlot™


The FlexSlot™ is a one piece, all metal design, temperatures available up to 1500F with nickel alloy


Excellent vibration resistance


High-tensile design


Heavy and finish, thins also available. Metrics and specials, from 4-40 to 8"


Now stocking Grade B and Grade C heat treated steel parts.


​MS21045   MS21046   974A0953



The Wireloc, or Coloc nut


All metal locking nut for temperatures to 1200F


The ONLY locknut to use for structural or galvanized bolting


Available in Grade 7, ASTM A194 2H, Grade 8, Stainless, and any other exotic alloy


From 1/4" to 8", metrics and special threads


Ratcheting locking element, extreme vibration resistance,  once installed will not be removed



Barrel Nuts, or Cradle nuts


Available with nylon insert or all metal locking element


Floating design eliminates user error


Manufactured to customer print, or to NAS577 standards


Manufactured in Inconel, A286, 17-4PH, or Alloy Steel


From 10-32 to 5", metrics and specials


Manufactured in the USA