Lockbolts

Reference illustration — produced to your drawing

Rivets

Lockbolts

Lockbolts are two-piece fasteners with a grooved pin and a collar that is swaged into the pin grooves under load. The swaged joint gives consistent clamp force and strong resistance to vibration loosening.

Used in trucks, trailers, rail, and heavy equipment where a bolted joint must not loosen in service. Buyers are vehicle and equipment manufacturers replacing rivets or high-grade bolts.

Standard

To your drawing

Size range

Pin diameter 4.8 – 19.0 mm · 3/16 – 3/4 in

MOQ

From 50 pcs

Lead time

Samples 5–10 days

What we produce

  • Two-piece pin and swaged collar system
  • Annular grooves on the pin lock the collar
  • Steel or alloy steel 4140 pin with steel or aluminium collar
  • Round, truss, or countersunk pin heads
  • Set with a lockbolt installation tool
  • Metric and inch pin diameters

Specification notes

  • Collar swaged to a set grip length
  • No re-torquing needed after installation
  • Pin and collar supplied as a matched pair

Specifications

Every line below is a starting point, not a limit. Non-standard sizes, special threads and unusual materials are what we do — send the drawing and we confirm what fits.

Size rangePin diameter 4.8 – 19.0 mm · 3/16 – 3/4 in
ThreadsNot applicable
Head / geometryRound, truss, or countersunk pin head; collar swaged by tool, no drive recess
MaterialsStainless steel 301 / 303 / 304 / 304L / 316 / 316L / 410 / 416 / 17-4PH · carbon steel 1045 / 1215 / 12L14 · alloy steel 4130 / 4140 · aluminium 2024 / 5052 / 6061 / 7075 · brass · bronze · copper · titanium
FinishesAs machined · black oxide · zinc plating · nickel plating · chrome plating · anodizing · passivation (through our vetted partner network)
Precision±0.01 mm on features that locate, seal or fit; ISO 2768-m for general dimensions
MarkingHead marking, grade marking or your own identification mark per drawing
DocumentsMaterial certificate (MTR) with every batch, plus pre-shipment photos before dispatch
MOQFrom 50 pieces per type and material · samples from 1 piece
Sample lead time5–10 days
Production lead time25–35 days after sample approval
QuoteWithin 24 hours, with DFM feedback

Other rivets we manufacture

See all 179 part types →

Send us the drawing

We reply within 24 hours with DFM feedback, a process route and a price. Samples from 1 piece, production from 50 pieces, shipped from Qidong City, Jiangsu Province, China.

Request a quote