Crosby Catalog - Crosby Turnbuckles

Crosby Turnbuckles

HG-223
Hook & Hook

Meets the performance
requirements of Federal
Specifications FF-T791b
Type 1, Form 1-Class 5,
except for those provisions
required of the contractor.

HG-225
Hook & Eye

Meets the performance
requirements of Federal
Specifications FF-T791b,
Type 1, Form 1-Class 6,
except for those provisions
required of the contractor.

HG-226
Eye & Eye

Meets the performance
requirements of Federal
Specifications FF-T791b,
Type 1, Form 1-Class 4,
except for those provisions
required of the contractor.

HG-227
Jaw & Eye

Meets the performance
requirements of Federal
Specifications FF-T791b,
Type 1, Form 1-Class 8,
except for those provisions
required of the contractor.

HG-228
Jaw & Jaw

Meets the performance
requirements of Federal
Specifications FF-T791b,
Type 1, Form 1-Class 7,
except for those provisions
required of the contractor.

Modified thread:
Note stress relieving
radii in this
unretouched
photo enlargement of
the supabuckle.

Standard thread:
Note stress building
sharp "V" in this
unretouched photo
enlargement.

Hot Dip galvanized.
End fittings are Quenched and Tempered, bodies heat treated by normalizing.
Hooks are forged with a greater cross sectional area that results in stronger hook with better fatique properties.
Modified UNJ thread for improved fatigue properties.
Turnbuckle eyes are forged elongated, by design, to maximize easy attachment in system and minimize stress in the eye. For turnbuckle sizes 1/4" through 2 1/2", a shackle one size smaller can be reeved through eye.
Forged jaw ends are fitted with bolts and nuts on sizes 1/4" through 5/8", and pins and cotters on sizes 3/4" through 2 3/4".
TURNBUCKLES RECOMMENDED FOR STRAIGHT OR IN-LINE PULL ONLY.
Lock Nuts available for all sizes.
Crosby's Quenched and Tempered end fittings and normalized bodies have enhanced impact properties for greater toughness at all temperatures.
Typical hardness levels, Tensile Strengths and Ductility Properties are available for all sizes.
Turnbuckles can be furnished proof tested or magnaflux inspected with certificates if requested at time of order.
Turnbuckle assembly combinations include: Eye and Eye, Hook and Hook, Hook and Eye, Jaw and Jaw, Jaw and Eye.