Free US Shipping on Every Order  |  Volume Discounts Available
Fastenio — Precision Fastening Solutions
18-8 (A2) Stainless Steel K-Lock (Kep) Nuts (Metric)

18-8 (A2) Stainless Steel K-Lock (Kep) Nuts (Metric)

SKU: FN-NT-KEP-M18· 6 sizes

Bulk-Only Item

Minimum order quantity: 250 pieces per pack. Ships 7 business days after your cart reaches the $500 bulk minimum — bulk-only and regularly-stocked items both count. Learn more →

$81.15/ 250 pcs

$0.32/ea

pack

1 pack × 250 = 250 pieces

Out of Stock
FN-NT-KEP-M8X1.25-SS18-CS-EHEX-PL
Free US shipping 30-day returns Ships ~7 business days

K-Lock (kep) nuts in 18-8 (A2) Stainless Steel — a hex nut pre-assembled with a captive free-spinning external-tooth lock washer; the washer teeth bite into the bearing surface as the nut is tightened for vibration-resistant locking without galling threads. 6 thread sizes (M3–M10). The most popular all-metal locknut — versatile, low-cost, easy to install. Ideal for electrical, appliance, automotive, and panel assembly. Sold in bulk multiples.

Material

Stainless Steel

Finish

Plain / Natural

Grade

18-8 (A2-70)

Drive Type

Hex External

Standard

K-Lock (Kep)

Guides: 18-8 stainless steel vs. other grades

Technical Specifications

Nut TypeK-Lock (Kep) — captive tooth washer
DriveExternal Hex
WasherFree-spinning external-tooth lock washer
StandardK-Lock (Kep)
Material Grade18-8 (A2-70)
FinishPlain
Thread TypeCoarse (ISO metric coarse pitch)

Order any size — 6 in this family

Type the packs you need and press Add; sort any column.

Packs
18-8 Stainless Steel
18-8 (A2) Stainless Steel K-Lock (Kep) Nuts (Metric)
M10 × 1.5100FN-NT-KEP-M10X1.5-SS18-CS-EHEX-PLOut of stock—
M3 × 0.51,000FN-NT-KEP-M3X0.5-SS18-CS-EHEX-PLOut of stock—
M4 × 0.71,000FN-NT-KEP-M4X0.7-SS18-CS-EHEX-PLOut of stock—
M5 × 0.81,000FN-NT-KEP-M5X0.8-SS18-CS-EHEX-PLOut of stock—
M6 × 1.0500FN-NT-KEP-M6X1.0-SS18-CS-EHEX-PLOut of stock—
M8 × 1.25250FN-NT-KEP-M8X1.25-SS18-CS-EHEX-PLOut of stock—