Hyde Tools 42030 Auto - Lock Snap - Off Blade Utility Knife, 18mm | the Hyde Store
Utility And Snap Off Knives — Primary Tool
№42030

Hyde Tools 42030 Auto-Lock 18mm Snap-Off Blade Utility Knife

MODEL 42030 · SKU H-42030 · UPC 079423420306
CHECK THIS AGAINST MY JOB
$8.69 PER UNIT · SINGLE UNIT UNIT PRICE

Selected subtotal: $8.69. Standard US shipping is $9.99 below $15, $7.99 from $15 to below $49, and free at $49 after discounts. Freight items excluded; other rates are shown at checkout.

IN STOCK
✓ SAME-DAY DISPATCH — ELIGIBLE IN-STOCK ORDERS BY 2 PM ET
✓ STANDARD US SHIPPING — $9.99 BELOW $15 · $7.99 FROM $15 · FREE AT $49 AFTER DISCOUNTS
✓ LOCAL PICKUP — FALL RIVER
✓ NET-30 & PO — APPROVED ACCOUNTS
Auto-Lock 18mm Snap-Off Blade Utility Knife

Official Hyde specifications

Dimensions
18 mm
Product type
Blade
PRODUCT FIT · IS THIS THE RIGHT TOOL? Straight answers. If it's the wrong tool for your job, we'll say so.

The guidance below describes applications and limitations. For a match to your particular job or an existing tool, ask us to confirm fit.

CHECK THIS AGAINST MY JOB →

Is this the right tool for your job?

✕CHOOSE A DIFFERENT TOOL WHEN
  • Deep single-pass cuts through thick board, membrane, or stacked underlayment — the blade will flex off line; step to the 25mm 42051.
  • Heavily side-loaded cuts where absolute blade rigidity matters — the screw-lock 42050 clamps harder.
  • Any cut documented by a written safety policy — a snap-off cannot self-retract, so it fails an EHS spec on its face; that is the Switchblade family's job.
  • Trade-specific repetitive cutting of leather, rubber, or belting, where a dedicated ground blade outlives a thousand snapped tips — that is the heritage square-points' work.
  • And fine curve-following in film or wallpaper wants a 9mm blade, not an 18mm.

Jobs this tool does

EXACT JOB METHODS FOR HYDE №42030
Job guide Keep a Fresh Edge on Abrasive MaterialOPEN JOB GUIDE

For these jobs—use this instead

THE JOB, THE REASON, AND THE BETTER TOOL
Deep single-pass cuts The blade will flex off line; step to the 25mm 42051. BETTER TOOL 25mm Snap-Off Blade Utility Knife with 42051 Heavily side-loaded cuts The screw-lock 42050 clamps harder. BETTER TOOL 18mm Snap-Off Blade Utility Knife with 42050

How the pros run it

01

Extend only what the cut needs

A snap-off is stiffest with the least blade out of the handle; long extension is for the 25mm depth knife, not this one. Set the shortest reach that clears the material and lock it. Snap at the drag, not at the break. The whole point of a segmented blade is a fresh edge on demand — renew the moment the cut stops being clean, using the built-in breaker so the segment shears square instead of shattering. The slide lock is there to be used. Do not cut on an unlocked slider; an 18mm blade under side load will creep back into the handle and skate off the line. Click it to a detent every time. Snapped segments are sharps. Each spent tip is a small two-edged razor. Snap it away from your body into a sharps container, never onto the floor — the breaker exists so the shard is captured, not flung.

Asked before buying

BUYER QUESTIONS, ANSWERED BEFORE YOU ORDER
How many edges per blade?
Eight — an 18mm blade carries eight snap-points, and this knife stores two spare blades plus the three it ships with.
What is the "auto-lock"?
A one-piece positive slide lock: sliding the blade out clicks it into a locked detent, so it holds without a separate screw step. Fast to set, versus the screw-lock 42050's harder clamp.
What is the blade breaker?
A slot built into the knife that grips a dull segment so you snap it off square and captured, without pliers and without a loose shard.
Does it self-retract for a safety program?
No. Snap-offs do not self-retract; a policy floor wants the Switchblade knives (42067/42062/42056).
What blade does it take?
Standard 18mm snap-off blades ; the handle holds two spares and three come in the box.

Compare Hyde models

Crew & facility ordering

Model & SKUModel 42030 · SKU H-42030 · UPC 079423420306
Product-specific quantity pricingSee this product’s published tiers above. Eligible discounts apply automatically at checkout.
PO & NET-30Approved contractors, facilities, schools and government buyers can route through Hyde Pro.
BUY FOR A CREW OR FACILITY →

Reviews

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Specs & documentation

Full specification details
catalog product name
Auto-Lock 18mm Snap-Off Blade Utility Knife
official family claim
8 points per blade.
official family claim
Retractable blade with one-piece positive lock.
official family claim
High-impact polystyrene with stainless steel blade track.
official family claim
Built-in blade breaker.
official family claim
Handle stores 2 blades.
official family claim
3 blades included.
official product name
18MM Snap-Off Utility Knife (Auto-Locking)
official variant identity
42030
official package image fact
Product type: BLADE.
official package image fact
Package-observed dimensions or capacities: 18MM.
official package image fact
Exact model 42030 appears in the official package image text.
corroborated construction material
Retailer/distributor listing independently repeats: stainless steel.
Hyde official catalog evidence ↗Hyde Tools manufacturer source ↗Hyde official catalog evidence ↗
$8.69PER UNIT · H-42030