IFI 100/107 Top Locknut Grade C 1/2-13
(Pack of
50)
The Top Locknut Grade C delivers uncompromising reliability when your high-stress applications demand it most. This heat-treated, vibration-resistant locknut maintains its grip through severe conditions that would cause standard nuts to fail, ensuring your critical assemblies stay secure even under extreme vibration and repeated stress cycles. Engineered specifically for Grade 8 applications, it retains its locking torque through a minimum of five reapplications while meeting stringent IFI and ANSI specifications with 150,000 PSI minimum proof strength. Whether you're working on heavy machinery, automotive assemblies, or industrial equipment, this Grade C locknut provides the dependable hold that keeps your work running smoothly and safely.
Heat-treated for matched strength
Will not loosen even under severe vibration
Locking torque is retained for a minimum of five reapplications
150,000 PSI minimum proof strength
Meets IFI and ANSI specifications
Developed for Grade 8 applications
Designed for use with Tuff-Torq® Cap Screws
Identified by six symmetrically spaced marks on the chamfered surface on the top of the nut
NOTE: Not recommended for use above 450°F (232°C).
For recommended torque values, see Lawson’s E546 brochure.
Couldn't load pickup availability
Frequently Bought Together

Self-Drilling Screw Hex Head #12-14 x 3/4"
Couldn't load pickup availability

Hex Nut Grade 8 Steel 5/8-11
Couldn't load pickup availability

Hex Cap Screw Grade 8 Alloy Steel 1/4-20 x 1"
Couldn't load pickup availability

Locknut Keps Grade 2 #8-32
Couldn't load pickup availability

SAE J995C Locknut with Nylon Insert Grade 8 1/2-20
Couldn't load pickup availability

Flange Locknut Grade 8 Alloy Steel 5/8-11
Couldn't load pickup availability

Hex Nut Grade 5 Steel 7/16-14
Couldn't load pickup availability

Hex Nut Machine Screw Grade 2 Steel #10-32
Couldn't load pickup availability

Hex Nut 18-8 Stainless Steel 3/8-16
Couldn't load pickup availability

SAE Flat Washer Thru-Hardened Steel 3/8"
Couldn't load pickup availability

Rechargeable Penlight Flashlight
Couldn't load pickup availability

Hex Nut Grade 5 Steel 5/16-18
Couldn't load pickup availability

E7018 Mild/Carbon Steel Stick Electrode 3/32"
Couldn't load pickup availability

LW2 Law Safety Glasses
Couldn't load pickup availability

E7018 Mild/Carbon Steel Stick Electrode 1/8"
Couldn't load pickup availability

18 V Lithium-Ion Battery Charger
Couldn't load pickup availability

Battery Doc® Sport Charger 1.25A 12V 12' Cord
Couldn't load pickup availability

Model 1800 12 Volt Portable Power Pack
Couldn't load pickup availability
Product Description
The Top Locknut Grade C delivers uncompromising reliability when your high-stress applications demand it most. This heat-treated, vibration-resistant locknut maintains its grip through severe conditions that would cause standard nuts to fail, ensuring your critical assemblies stay secure even under extreme vibration and repeated stress cycles. Engineered specifically for Grade 8 applications, it retains its locking torque through a minimum of five reapplications while meeting stringent IFI and ANSI specifications with 150,000 PSI minimum proof strength. Whether you're working on heavy machinery, automotive assemblies, or industrial equipment, this Grade C locknut provides the dependable hold that keeps your work running smoothly and safely. Heat-treated for matched strength
Will not loosen even under severe vibration
Locking torque is retained for a minimum of five reapplications
150,000 PSI minimum proof strength
Meets IFI and ANSI specifications
Developed for Grade 8 applications
Designed for use with Tuff-Torq® Cap Screws
Identified by six symmetrically spaced marks on the chamfered surface on the top of the nut
NOTE: Not recommended for use above 450°F (232°C).
For recommended torque values, see Lawson’s E546 brochure.
Technical Specifications
Item#: | 80931 |
---|---|
Diameter | 1/2 " |
Thread Pitch | 13 |
Grade | C |
Finish | Zinc/Wax |
Type | Top Lock Nut |
Material | Alloy Steel |
Thickness | 0.573 " |
Across Flats | 3/4 " |
Thread | Coarse |
Size | 1/2-13 |
Specifications | IFI 100/107 |
Maximum Temperature | 450º F |
Proof | 150,000 PSI |
UNSPSC #: | 31161716 |
TAA Compliant: | No |
Weight: | 1.71 lb |
Product Restrictions
