PDFWAC 296-155-56110
Adjustable hardware.
(1) Turnbuckles must be constructed in accordance with ASME B30.26-2020, Rigging hardware. Turnbuckles manufactured prior to the effective date of this section, must comply with ASME B30.26-2015.
(2) Turnbuckles shall be marked by the manufacturer to show:
(a) Name or trademark of manufacturer;
(b) Size or rated load; and
(c) Grade for alloy eyebolts.
(3) Follow these rigging practices for turnbuckles:
(a) Locking nuts, if used, must be compatible with the threads of the turnbuckle end. (See Figure 30, Turnbuckle Types.)
(b) For long-term installations, secure turnbuckles in a way that prevents unscrewing.
(c) Turnbuckle end fitting threads must be fully engaged in the body threads.
(d) Components, including pins, bolts, nuts, or cotter pins used with jaw ends, must be in good working condition prior to use.
(e) Pipe bodies conceal the length of thread engagement. Verify full engagement before loading. (See Figure 30.)
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Figure 30 Turnbuckle Types |
(4) Eyebolts must be constructed in accordance with ASME B30.26-2020, Rigging hardware. Eyebolts manufactured prior to the effective date of this section, must comply with ASME B30.26-2015.
(5) Eyebolts shall be marked by the manufacturer to show:
(a) Name or trademark of manufacturer;
(b) Size or rated load; and
(c) Grade for alloy eyebolts.
(6) Follow these rigging practices for eyebolts:
(a) The employer must only use eyebolts not shouldered to the load for in-line loads. (See Figure 31, Eyebolts.)
(b) The employer must use only shoulder eyebolts for angular lifting.
(i) The shoulder must be flush and securely tightened against the load.
(ii) The employer must reduce the working load limit (WLL) as shown in Figure 31.
(iii) For angular lifts, the employer must align the plane of the eye with the direction of loading. If needed, flat washers can be used under the shoulder to position the plane of the eye. (See Figure 31.)
(c) When using eyebolts in a tapped blind hole, the effective thread length must be at least one and one-half times the diameter of the bolt for engagement in steel. (See Figure 31.) For other engagements, or engagements in other materials, contact the eyebolt manufacturer or a qualified person.
(d) When using eyebolts in a tapped through-hole of less than one diameter thickness, the employer must use a nut under the load, and it must be fully engaged and tightened securely against the load. (See Figure 31.)
(e) When eyebolts are used in an untapped through-hole, the nut under the load must be fully engaged. If the eyebolt is not shouldered to the load, a second nut on top of the load must be used if possible. (See Figure 31.)
Note: | See Figure 31 for examples of eyebolts covered by this rule. |
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Figure 31 Eyebolts |
(7) Eye nuts must be constructed in accordance with ASME B30.26-2020, Rigging hardware. Eye nuts manufactured prior to the effective date of this section, must comply with ASME B30.26-2015.
(8) Eye nuts shall be marked by the manufacturer to show:
(a) Name or trademark of manufacturer; and
(b) Size or rated load.
(9) Follow these rigging practices for eye nuts (see Figure 32, Eye Nuts):
(a) The threads of eye nuts must be fully engaged;
(b) The employer must only use nuts for in-line loads;
(c) Components must be in good working condition prior to use.
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Figure 32 Eye Nuts |
(10) Swivel hoist rings must be constructed in accordance with ASME B30.26-2020, Rigging hardware. Swivel hoist rings manufactured prior to the effective date of this section, must comply with ASME B30.26-2015.
(11) Swivel hoist rings shall be marked by the manufacturer to show:
(a) Name or trademark of manufacturer;
(b) Rated load; and
(c) Torque value.
(12) Follow these rigging practices for swivel hoist rings:
(a) The swivel hoist ring working load limit (WLL) must meet or exceed the anticipated angular rigging tension. (See Figure 33, Angle of Loading.)
(b) The employer must tighten swivel hoist rings to the torque specifications of the manufacturer.
(c) The swivel hoist ring must be free to rotate and pivot without interference during lifting. (See Figure 34, Swivel Hoist Rings.)
(d) The load applied to the swivel hoist ring must be centered in the bail to prevent side loading.
(e) Any attached lifting component must be narrower than the inside width of the bail to avoid spreading.
(f) When using swivel hoist rings in a threaded-hole, the effective thread length must be 1 1/2 times the diameter of the bolt for steel. (See Figure 34.) For other thread engagements or engagement in other materials, contact the manufacturer or a qualified person.
(g) When using swivel hoist rings in a through-hole application, the employer must use a nut and washer. A washer and nut must be in accordance with the manufacturer's recommendations. The nut must be fully engaged. (See Figure 34.)
(h) The bushing flange must fully contact the load surface. (See Figure 34.)
(i) The employer must not use spacers or washers between the bushing flange and the mounting surface of the load being lifted.
Note: | See Figure 34 for examples of swivel hoist rings covered by this rule. |
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Figure 33 Angle of Loading (Adjustable Hardware) |
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Figure 34 Swivel Hoist Rings |
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060, and chapter 49.17 RCW. WSR 25-16-089, s 296-155-56110, filed 8/5/25, effective 9/5/25. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 16-09-085, § 296-155-56110, filed 4/19/16, effective 5/20/16. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.440, 49.17.060, and 29 C.F.R. 1926, Subpart CC. WSR 12-01-086, § 296-155-56110, filed 12/20/11, effective 2/1/12.]