SKCOAUTO 7/16-20 Lug Nuts for Chevy K10 (1971–1985) — 24pc Chrome, 60° Tapered Seat

These are a set of 24 solid one-piece 7/16-20 lug nuts finished in three-layer chrome with a 60° tapered seat, sized for many Chevrolet trucks and classic models including K10 (1971–1985).

Designed for restorations and wheel replacements on vintage Chev trucks and related GM models, this lug-nut kit pairs cold-forged SCM steel strength with corrosion-resistant plating. Each nut has a 3/4" hex head, measures 1.38" long with a 0.87" flange width, and accepts wheels that use a 60° conical seat. These are NOT compatible with flat, 90° mag, ball, or radius-seat wheels — verify wheel seat type and flange clearance before purchase.

Will these lug nuts fit my Chevy K10 or other classic GM wheel?

They fit wheels that require 7/16-20 threads and a 60° tapered/conical seat; many aftermarket and factory wheels on classic Chevrolets match that specification. Consult your wheel manual or measure the seat angle and flange clearance to confirm compatibility.

• Thread size: 7/16-20 (coarse)
• Seat angle: 60° tapered/conical — not for flat/ball/radius seats
• Flange limit: 0.87" maximum — must clear wheel hub and cap
• Common fits: K10 1971–1985 plus many Blazer, Camaro, El Camino, Nova models listed in fitment

How durable are these lug nuts against rust and road exposure?

The nuts are made from heat-treated SCM steel (10.9 grade) and are cold-forged for strength. A three-layer chrome finish protects against oxidation and chemical exposure, and the parts pass a 72-hour ASTM B117 salt spray test for enhanced corrosion resistance.

• Material: 10.9 Grade SCM heat-treated steel
• Manufacturing: cold-forged, single-piece construction
• Finish: triple-layer chrome plating for rust resistance
• Testing: 72-hour ASTM B117 salt spray certification

What physical specs and installation details should I know?

Each lug nut uses a 3/4" (0.75") hex head for standard sockets, measures approximately 1.38" in overall length, and has a flange/width of 0.87". Because they are tapered-seat lug nuts, they seat into conical wheel holes — improper match or installation can cause wheel damage or safety issues.

• Hex size: 3/4" for wrench/socket
• Overall length: 1.38" (approx.)
• Flange/width: 0.87" maximum — check wheel clearance
• Do not use with wheel caps; confirm torque specs and thread engagement

What precautions and after-sales support are provided?

Confirm that your wheels accept a 60° tapered nut and that flange clearance is under 0.87" before installing. Improper selection or tightening may lead to wheel failure; follow vehicle torque specifications and inspect threads for damage. SKCOAUTO provides a 12-month after-sales policy for quantity or quality concerns.

• Check wheel seat angle and flange clearance before purchase
• Not compatible with wheel caps or non-conical seats
• Follow manufacturer torque recommendations during installation
• 12-month after-sales support for shortages or defects

Who is this for? This 24-piece lug-nut set suits enthusiasts restoring late-1970s and early-1980s Chevrolet trucks and GM compact models, mechanics replacing worn fasteners on period-correct wheels, and owners seeking stronger, corrosion-resistant lug hardware for vintage Chevy pickups like the K10 (1971–1985) and similar models. If your wheels require 7/16-20 threads and a 60° tapered seat and you can accommodate a 0.87" flange, this kit delivers OEM-style fit with upgraded plating and material strength.