We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rubber thread protector covers, 16 by 6 mm, 4 mm inner diameter, pack of 100

UXCell

UXCell Rubber Thread Protector Cover 4mm Inner Dia Black 100pcs

SKU CH-JWMA-Y0BBJ

Protects 4 mm threads with 100 rubber caps measuring 16 × 6 mm and weighing 28 g

  • Product typeIndustrial Cable
  • Protects 4 mm threads with snug rubber fit
  • 100 covers per pack keep spares on hand
  • Weighs only 28 g for light handling
  • Compact 16 mm length suits tight spaces
  • Black rubber resists oil and heat exposure

Rubber Thread Protector Cover 4mm

The UXCell rubber thread protector cover shields 4mm internal threads on hose ends, pipe fittings or screw posts. Supplied in a 100-piece pack, it suits workshops, automotive looms and industrial cable assemblies that need a quick, reusable seal against dust and moisture.

Friction-fit installation for fast assembly

Each cap pushes onto a 4mm inner diameter by hand, requiring no tools, clamps or adhesive. The 16mm overall length covers enough thread engagement to stay put under vibration, while the lightweight rubber adds only 28g per hundred pieces to a harness.

Black rubber resists heat, oil and UV

The silicone-based material remains flexible across a wide temperature range and resists common automotive fluids. In normal use the caps stay seated without cracking or hardening, keeping protected threads clean and corrosion-free.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 87% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameUnique Bargains
Product typeIndustrial Cable

Questions about this item

Will the 4 mm inner diameter stretch over time when left on a fitting?

The caps are moulded rubber with a fixed 4 mm bore; they rely on friction rather than elasticity, so the opening does not permanently enlarge with prolonged use.

Do the covers become brittle or soft after continuous exposure to engine-bay heat?

Rubber construction resists typical under-hood temperatures without melting or cracking, and the 28 g total pack weight shows minimal material to degrade.

What thread pitch or diameter must the male fitting have for these 4 mm caps to seat properly?

They fit any external thread that measures 4 mm across the peaks; total length is 16 mm and outer diameter is 6 mm, so the male thread must engage within those dimensions.

More in Wire, Cable & Wiring Supplies

Similar items