Lockbolt Pin and Collar Assemblies

Product detail · Updated 10 October 2026

Product and assembly brief

This selector covers a headed pin and separate collar which is swaged into the pin’s locking grooves. Identify the complete matched assembly, not a generic bolt and nut or ordinary blind rivet. Product geometry and joint acceptance require the selected drawing and setting specification.

Product forms and reference names

Choice or field	What to identify
Breakstem pin and collar	The selected design includes a breakneck and pulling tail; use its own pin, collar and setting specification.
Non-breakstem system	Some proprietary systems retain the pin tail. Do not infer this variant’s geometry or tooling from a breakstem example.
Drawing-defined collar variant	Identify collar body, flange, bore and orientation separately; one visible shape is not interchangeable with another.

Pin and swage collar, not an ordinary rivet

Howmet describes a separate collar plastically formed into grooves on a pin. A blind rivet instead forms its own body around a pulled mandrel; a solid rivet forms its shank end. These are different selection mechanisms. The AI illustration shows uninstalled components only, not a qualified joint.

Locking grooves and tail regions

Titgemeyer’s original DeltaBolt component diagram separates the head, smooth shank, locking grooves, breakneck and pulling tail. Use these as identification concepts, not a generic dimensional drawing. The illustration’s annular grooves are not a helical screw thread; exact pitch, groove profile and tail form remain selected-design requirements.

Breakstem is not universal

STANLEY identifies NeoBolt as a non-breakstem two-piece system with its own fit-up feature and fastener-specific nose assemblies. A breakneck and discarded pintail are therefore not universal lockbolt requirements. Source brand names identify the evidence only; no affiliation, offered brand, equivalence or replacement-tool compatibility is asserted.

Grip, hole and access belong to the joint

Record the actual joined stack, prepared holes and access on both sides for the selected assembly. Specify the documented grip interval and length datum, without treating overall pin length as grip. Provide both component drawings and the installation specification; the family name alone does not confirm hole fit or tool access.

Matched setting and inspection

State the actual pin and collar references, collar orientation, setting tool and nose assembly, and approved process. Require selected-system inspection and qualification criteria. No generic setting force, stroke, torque, load, vibration resistance, sealing or maintenance-free performance is supplied here.

Technical references and purchasing boundary

DVS Media identifies DVS/EFB 3435-1 as a lockbolt-systems bulletin. The official DVS portal identifies 3435-2 as connection-calculation guidance with a defined scope. Neither listing proves conformity of an unspecified assembly or supplies a universal product dimension table. Actual materials, coatings, documents, supply scope and timing require drawing review and quotation confirmation.

Specification fields

Choice or field	What to identify
Assembly identity	Complete pin and collar references, controlled drawings/revisions, units and selected specification/edition if required.
Pin regions	Head and bearing seat, smooth shank, locking grooves, length datum, breakneck/pulling-tail or non-breakstem form and tolerances from selected drawing.
Collar	Body/flange/bore geometry, installation orientation, selected matching reference and required supplied condition.
Joined components	Layer materials, individual thicknesses, total stack, hole drawings/tolerances and access/clearance on both sides.
Grip and setting	Selected documented grip interval, tool/nose references and approved process or compatibility-review requirements.
Materials and acceptance	Separate pin/collar material and finish requirements, installed inspection criteria and requested qualification records.
Order package	Quantity by pin/collar or complete set, packing, traceability/documents, destination and unresolved decisions.

Common product questions

Is a lockbolt the same as a blind rivet?

No. This page covers a separate pin and swaged collar. A structural blind fastener may use a different construction; select its exact reference.

Does every lockbolt break its pin tail?

No. Breakstem and non-breakstem systems exist. Identify the selected pin, collar and setting system rather than transferring one variant’s process.

Can any pulling tool set a lockbolt?

No generic fit is promised. Confirm the specific nose assembly, tool requirements, access and approved installation process for the selected assembly.

Product references

References checked 10 October 2026 identify structures, not FastenerBridge stock, compliance or brand affiliation. Final requirements follow the selected specification. No normative dimension, load rating or tightening torque is stated.