U-Bolts

Explore in 3D ↗

MaterialChoose a materialChange

Search grade, alias or UNS

U-shaped bolts with two threaded legs and a specified bend profile.

Metric thread diameter: M4–M100

View standards ↓

Request a quote Send your drawing

Thread pitch: Coarse or fine
Thread coverage: Threaded at both leg ends

Thread systems: Metric

U-BoltsRequest a quote ↗

Standards & specifications

Dimensional standards / referencesDIN 3570 for applicable pipe-clamp forms; other bends to drawing

Preview your dimensions

Enter the dimensions you know to update the model. Blank fields use illustrative proportions and are excluded from your enquiry. You can send a drawing without filling these fields.

Illustrative shape with simplified threads, recesses and edges. No tolerance, fit, load or standard compliance is simulated.

Length unitsThread series

d · Nominal thread diametermmProvide both end thread designations and pitch.C · Leg centre spacingmmMeasure between leg centre lines; this differs from clear inside width.P · Thread pitchmmDistance between adjacent threads in the selected length unit. For inch threads, enter 1 / TPI.H · Overall heightmmMeasure the distance between the two indicated end faces.b · End threaded lengthmmMeasure the distance between the two indicated end faces.W · Clear inside widthmm30 · CalculatedClear distance between the inside faces. Also specify pipe outside diameter when applicable.

Measurement notes

Illustrative geometry with simplified thread and drive details; confirm the actual drawing before manufacture.

Quality documents

Material certificate

MTC · EN 10204 3.1 included

310 fastener MTC · PDF ↗310S bar MTC · PDF ↗

Heat number traceability

Every delivery traceable by heat number

Mechanical testing

Included with every delivery

Thread inspection

GO / NO-GO gauging · sampled inspection

Product-specific review: width and height with their measurement datums, rod diameter, bend form and threaded length at both ends.

Methods, sampling and acceptance criteria follow the agreed specification. PMI, third-party inspection and additional records are agreed separately.

Before production and at delivery

During quotation, a redacted certificate from a previous order can show the document format and recorded tests. It is a historical example, not certification of this product or a new order. Shipment documents must correspond to the material and batch actually supplied.

How to read a historical certificate sample ↗

Prepare your enquiry

Send a drawing and quantity.
No drawing? Use these details.

Size: Diameter × length
Quantity: Pieces
Material: Grade / UNS
Requirements: Drawing / standard

Start with a drawing, specification or written requirement; a drawing is not needed for an initial enquiry. For this product, include width and height with their measurement datums, rod diameter, bend form and threaded length at both ends along with the alloy grade, condition and quantity. BYBOLT clarifies open requirements with you before confirming the quotation and arranging production. Any change to an agreed material or specification requires your approval.

Order checklist

Rod diameter and complete thread designation.

Inside width, leg centre distance or outside width—state which one applies.

Inside height or overall height—state the datum and end reference.

Thread length on each leg and any unthreaded transition or runout zone.

Inside or centreline bend radius, leg parallelism and end alignment where controlled.

Commercial terms

Indicative terms; confirmed in your quotation.

Typical MOQ

10pieces

Subject to product and material review.

Conditions

MOQ is typically 10 pieces, subject to product, material and manufacturing-route review.

Sample review

~20days

Freight, import duties and taxes are separate.

Conditions

Samples are typically reviewed on an approximately 20-day basis. BYBOLT may cover agreed sample manufacturing; buyer freight, import duties and taxes remain separate.

Production review

25–35days

Urgent requirements can be discussed.

Conditions

Regular production is commonly reviewed on a 25–35 day basis. Urgent requirements can be discussed against the complete specification.

Typical deposit

30%

T/T or LianLian. Balance before dispatch.

Conditions

Payment can be arranged by T/T or LianLian. A typical order uses a 30% deposit, with the balance completed before dispatch.

Technical help

Structure and product identity

A U-bolt is formed from rod with two legs and threaded ends. Round, square, extended-leg and other drawing-defined forms require different geometry. The approved drawing, agreed standard and purchase documents control the finished part.

Related material guides