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Brass turnbuckle body, 4 in long, right and left hand threads

Loos & Co., Inc.

Loos & Co., Inc. MS21251-B5L Turnbuckle Body 3,200 lb 4 in

SKU CH-B1QX-3TPBY

A brass turnbuckle body rated for a 3,200 lb working load limit with 1/4-28 UNF right- and left-hand threads and a 4 in overall length

  • TypeMechanical Push Button
  • Working load limit 3,200 lb for heavy rigging
  • Brass body resists corrosion in marine use
  • 4 in overall length fits standard assemblies
  • UNF 1/4 in. -28 threads ensure secure tensioning
  • Meets MIL-DTL-8878 military specification

Turnbuckle Body for Rigging

The Loos MS21251-B5L turnbuckle body provides a 3,200 lb working load limit for tensioning wire rope or cable assemblies. Its brass construction resists corrosion in marine and outdoor environments. Right-hand and left-hand UNF threads allow precise length adjustment without twisting the attached lines. The 4 in overall length suits compact rigging points where space is limited.

Mechanical Push Button Compatibility

The turnbuckle body is specified as a mechanical push button type, indicating it is designed to work with push-button terminal fittings. This pairing lets operators secure or release the rope quickly without tools. The 5/32 in compatible rope diameter matches common small-diameter control cables used in architectural and industrial installations.

Thread and Standard Verification

Confirm that your existing end fittings use 1/4 in -28 UNF threads before ordering. The MIL-DTL-8878 standard governs dimensions and testing, so the turnbuckle body meets military procurement requirements. Check that the right-hand and left-hand thread directions match the mating components in your assembly. No other interface or load-rating data is supplied.

Highlights

  • Working load limit 3,200 lb for heavy rigging
  • Brass body resists corrosion in marine use
  • 4 in overall length fits standard assemblies
  • UNF 1/4 in. -28 threads ensure secure tensioning
  • Meets MIL-DTL-8878 military specification

Specifications

BrandLOOS
TypeMechanical Push Button

Questions about this item

How often should the brass turnbuckle body be inspected for thread wear under a 3,200 lb working load limit?

Inspect the UNF 1/4-28 threads at each tension adjustment; brass shows galling earlier than steel, so replace the body if the right-hand or left-hand threads no longer engage smoothly.

What is the first limiting factor when the turnbuckle is held at its 3,200 lb working load limit for extended periods?

The 3,200 lb working load limit per MIL-DTL-8878 is the primary limit; sustained loading at this value should not be exceeded, and the 5/32 in compatible rope diameter must match to avoid premature deformation.

Does the brass body generate noticeable heat or require extra power when under constant 3,200 lb tension all day?

No, the mechanical brass turnbuckle body produces no heat and consumes no power; it simply maintains tension through its right-hand and left-hand UNF threads without any energy input.

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