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Bolts · Studs & Threaded Rods

Inch Left-Hand Fully Threaded Rod

6 catalogued sizes, dimensioned to ASME B18.31.3 and ASME B1.1 LH. Pick any row and the technical drawing redraws to it.

Inch Left-Hand Fully Threaded Rod to ASME B18.31.3 and ASME B1.1 LH: the full dimensional table is reproduced below. 6 sizes are held in the table below, and the technical drawing redraws to whichever row you select.

Standard
ASME B18.31.3 and ASME B1.1 LH
Catalogued sizes
6

Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering.

Inch Left-Hand Fully Threaded Rod technical product image

Applications & Industries

Where Inch Left-Hand Fully Threaded Rod are used, and what decides the specification in each case. Stocked from 6-32 to 1/2-13 (screw size).

Industries that specify Inch Left-Hand Fully Threaded Rod

  • Opposed adjusters Left-hand and right-hand rod pairs used to change length without disconnecting the joint.
  • Rotating equipment Threaded adjustments arranged to resist self-loosening in service.
  • Machine fixtures Inch adjustment rods where the thread hand is part of the mechanism.
  • Repair and fabrication Replacement rod matched to existing left-hand nuts and couplers.
  • Pressure equipment & flanges Studs and nuts on flanged joints, where both ends are tightened and the assembly is inspected.
  • Plant & machine installation Anchoring and levelling machines onto bases and frames.

Typical applications

  • providing a left-hand threaded member for an opposed adjuster
  • matching the rod to a left-hand nut rather than a standard right-hand nut
  • holding a threaded adjustment against rotation in a paired mechanism
  • specifying inch thread class, hand, length and material together
  • clamping a joint from both ends where a headed bolt will not fit
  • suspending services from a soffit on threaded rod

Service conditions to specify against

Marine and coastal
Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
High load
Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.

Where to use something else

  • Do not pair a left-hand rod with an ordinary right-hand nut; the threads will not engage correctly.
  • Not for a joint that must be tightened from one side only — there is no head to hold.

Full application guide: where Inch Left-Hand Fully Threaded Rod are used, how to specify them, and the cases they are wrong for

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

Request a Quotation for Inch Left-Hand Fully Threaded Rod

The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.

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Specification
Business Information

Dimensions & Specifications (ASME B18.31.3 and ASME B1.1 LH)

Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.

Nominal sizeThread handThread classStandard lengths (in/ft)Material optionsReference standard
6-32left-hand2A12 / 24 in and 3 ftzinc-plated steel / 18-8 stainless / 316 stainlessASME B18.31.3 and ASME B1.1 LH
8-32left-hand2A12 / 24 in and 3 ftzinc-plated steel / 18-8 stainless / 316 stainlessASME B18.31.3 and ASME B1.1 LH
10-24left-hand2A12 / 24 in and 3 ftzinc-plated steel / 18-8 stainless / 316 stainlessASME B18.31.3 and ASME B1.1 LH
1/4-20left-hand2A12 / 24 in and 3 ftzinc-plated steel / 18-8 stainless / 316 stainlessASME B18.31.3 and ASME B1.1 LH
3/8-16left-hand2A12 / 24 in and 3 ftzinc-plated steel / 18-8 stainless / 316 stainlessASME B18.31.3 and ASME B1.1 LH
1/2-13left-hand2A12 / 24 in and 3 ftzinc-plated steel / 18-8 stainless / 316 stainlessASME B18.31.3 and ASME B1.1 LH

Manufactured to ASME B18.31.3 and ASME B1.1 LH, Inch Left-Hand Fully Threaded Rod are bolts supplied by Engineering Hardware. The dimensional data, materials and selection notes are summarized here.

What Are Inch Left-Hand Fully Threaded Rod?

Inch Left-Hand Fully Threaded Rod are bolts defined by ASME B18.31.3 and ASME B1.1 LH. They are selected by screw size and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment.

Materials & Finishes

Common materials include carbon steel (typically zinc plated or hot-dip galvanized), alloy steel in property classes 8.8, 10.9 and 12.9, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, property class and surface finish appropriate to your load and environment.

Pricing

Inch Left-Hand Fully Threaded Rod are supplied to order. Pricing starts from approximately US$4.00 per piece for standard sizes in carbon steel; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above.

Inside the plant

Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

  1. Wire rod feeding into a cold heading machine
    01

    Cold heading

    Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.

    Head dimensions and under-head radius checked at set-up and per shift.

  2. Thread rolling machine producing bolt threads
    02

    Thread rolling

    Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.

    Go / no-go ring gauges to ISO 965 tolerance class 6g.

  3. Baskets of bolts staged for heat treatment
    03

    Heat treatment

    Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.

    Core hardness and tensile tested per lot to ISO 898-1.

  4. Zinc plated bolts in a treatment basket
    04

    Surface treatment

    Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.

    Coating thickness and neutral salt spray hours to ISO 9227.

Video: Inch Left-Hand Fully Threaded Rod

Third-party video, selected automatically for this topic. It is not produced by Engineering Hardware and is not a specification source — use the tables on this page for dimensional data.

Frequently Asked Questions

What standard are Inch Left-Hand Fully Threaded Rod manufactured to?

Inch Left-Hand Fully Threaded Rod are manufactured to ASME B18.31.3 and ASME B1.1 LH. The dimensional values on this page follow that standard.

What sizes are available for Inch Left-Hand Fully Threaded Rod?

The table on this page lists 6 sizes for Inch Left-Hand Fully Threaded Rod, ranging from 6-32 to 1/2-13. Sizes outside the table can be quoted on request.

In which materials are Inch Left-Hand Fully Threaded Rod supplied?

Inch Left-Hand Fully Threaded Rod are supplied in carbon steel in property classes 8.8 / 10.9 / 12.9 and stainless A2 (304) / A4 (316), with finishes including zinc plating, hot-dip galvanizing and black oxide. Choose material and finish to suit the load and the service environment for Inch Left-Hand Fully Threaded Rod.

How do I request a quotation?

Use the parametric drawing on this page to set the exact configuration (size, material, finish) and click "Request this configuration" — a specialist from Engineering Hardware will respond within one business day.