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Home > Products > All Collections > Rigging Hardware & Fittings > Turnbuckles & Rigging Screws > U.S. Type Drop Forged Turnbuckle

U.S. Type Drop Forged Turnbuckle

Name: U.S. Type Drop Forged Turnbuckle
Brand: H-Lift Industries Co Ltd
SKU: 702001
Availability: InStock
Rating: 5 (1 reviews)

No.702001

The H-Lift U.S. Type Drop Forged Turnbuckle is a high-strength tensioning device manufactured to meet Federal Specification FF-T-791b Type 1, Form 1 and ASTM F1145 standards. Constructed from drop-forged high-tensile carbon steel with a hot-dipped galvanized finish, these turnbuckles provide superior durability and fatigue resistance for critical rigging, heavy construction, and marine applications. Available in a wide range of sizes and end fitting combinations, they are designed to eliminate slack and precisely adjust tension in demanding load-bearing systems.

Complies with U.S. Federal Spec FF-T-791b and ASTM F1145
Material: Drop-forged carbon steel, quenched and tempered
Finish: Hot-dipped galvanized for enhanced corrosion resistance
Safety Factor: 5:1 (Ultimate Load is 5 times the Working Load Limit)
Available Configurations: Eye & Eye, Hook & Hook, Hook & Eye, Jaw & Jaw, Jaw & Eye

Technical Data
Differene between Rigging Screws and Turnbuckles

H-Lift US Type Drop Forged Turnbuckles are the industry standard for heavy-duty tensioning and rigging. Meeting Federal Specification FF-T-791b and ASTM F1145, these turnbuckles offer a 5:1 safety factor and superior grain structure, making them suitable for critical applications including overhead lifting, marine rigging, and structural support.

🏗️ Heavy Duty Forged

Manufactured from Drop Forged Carbon Steel (C1045) for maximum structural integrity, impact resistance, and load-bearing capacity.

🛡️ 5:1 Safety Factor

Designed with a minimum breaking load of 5 times the Working Load Limit (WLL), qualifying them for critical overhead lifting.

📜 Federal Spec Compliant

Fully meets or exceeds the requirements of Federal Specification FF-T-791b Type 1, Form 1 and ASTM F1145.

⚙️ Versatile End Fittings

Available in Jaw & Jaw (for shackles), Eye & Eye (permanent inline), and Hook configurations to suit any rigging assembly.

Q: Can US Type Drop Forged turnbuckles be used for overhead lifting?
A: Yes. Unlike malleable iron turnbuckles, US Type Drop Forged turnbuckles are designed with a 5:1 safety factor and are suitable for overhead lifting and critical rigging.

Q: What is the difference between Jaw, Eye, and Hook end fittings?
A:

Jaw: Includes a bolt/pin for connecting to fixed eyes or fittings that cannot open.
Eye: A closed loop for permanent connections to shackles or wire rope.
Hook: An open hook for quick temporary connections (typically has a lower WLL).

Technical Specifications

Item No.	Size (Dia. x Takeup)	W.L.L. (lbs)		Weight (lbs)				Product Code
Item No.	Size (Dia. x Takeup)	Hook Ends	Jaw/Eye Ends	E&E	H&H	J&J	Stub	Product Code
TB106100	1/4 x 4	400	500	0.30	0.30	0.35	0.29	70200106100
TB108113	5/16 x 4-1/2	700	800	0.50	0.50	0.58	0.46	70200108113
TB110152	3/8 x 6	1000	1200	0.75	0.82	0.93	0.75	70200110152
TB113152	1/2 x 6	1500	2200	1.50	1.62	1.68	1.36	70200113152
TB113228	1/2 x 9	1500	2200	1.75	1.82	1.85	1.69	70200113228
TB113304	1/2 x 12	1500	2200	2.18	2.19	2.20	2.00	70200113304
TB116152	5/8 x 6	2250	3500	2.63	2.59	2.82	2.15	70200116152
TB116228	5/8 x 9	2250	3500	3.00	3.01	3.25	2.70	70200116228
TB116304	5/8 x 12	2250	3500	3.25	3.50	3.75	3.22	70200116304
TB119152	3/4 x 6	3000	5200	3.75	4.25	4.68	3.25	70200119152
TB119228	3/4 x 9	3000	5200	4.50	5.00	5.38	4.00	70200119228
TB119304	3/4 x 12	3000	5200	5.75	5.75	6.12	4.65	70200119304
TB119457	3/4 x 18	3000	5200	7.00	7.25	7.25	6.12	70200119457
TB122152	7/8 x 6	4000	7200	5.85	6.29	6.84	4.75	70200122152
TB122304	7/8 x 12	4000	7200	8.38	8.88	9.36	6.67	70200122304
TB122457	7/8 x 18	4000	7200	10.25	10.60	11.44	8.75	70200122457
TB125152	1 x 6	5000	10000	8.76	9.16	9.51	6.41	70200125152
TB125304	1 x 12	5000	10000	11.25	12.00	12.88	8.90	70200125304
TB125457	1 x 18	5000	10000	14.00	14.75	16.10	11.70	70200125457
TB125609	1 x 24	5000	10000	17.00	17.75	18.60	14.30	70200125609
TB132152	1-1/4 x 6	6500	15200	15.45	16.03	16.69	10.40	70200132152
TB132304	1-1/4 x 12	6500	15200	19.00	21.20	23.60	14.20	70200132304
TB132457	1-1/4 x 18	6500	15200	24.10	26.00	26.60	18.00	70200132457
TB132609	1-1/4 x 24	6500	15200	25.00	28.70	31.20	21.80	70200132609
TB138304	1-1/2 x 12	7500	21400	27.00	31.10	35.50	20.50	70200138304
TB138457	1-1/2 x 18	7500	21400	31.20	36.40	40.70	26.20	70200138457
TB138609	1-1/2 x 24	7500	21400	38.20	44.20	47.60	31.40	70200138609
TB144457	1-3/4 x 18	-	28000	45.20	48.80	52.40	-	70200144457
TB144609	1-3/4 x 24	-	28000	58.00	60.00	64.00	43.90	70200144609
TB150609	2 x 24	-	37000	90.00	102.00	115.00	60.30	70200150609
TB164609	2-1/2 x 24	-	60000	180.00	183.00	200.00	110.00	70200164609
TB170609	2-3/4 x 24	-	75000	210.00	214.00	248.00	-	70200170609

⚠️ Rigging Safety Tip

Always inspect turnbuckles for straightness and thread damage before use. Ensure the turnbuckle is rigged in a straight line to prevent side loading, which can significantly reduce the Working Load Limit.

Rigging screws and turnbuckles are essential components used to adjust tension and secure loads. While they serve similar functions, their distinct designs make them suitable for specific applications.

Rigging Screws

*Rigging screws feature a pipe-like closed body encasing the threads.

Definition: Also known as rigging tensioners, these devices adjust tension in cables, wires, or rods. They typically feature a closed body (tubular) design.
Functionality: Rotating the body causes the attached fittings (different handed threads) to move in or out, providing precise tensioning.
Best Use: Critical for maintaining correct tension in shrouds, stays, and guard wires where protection of the threads is beneficial.

Turnbuckles

*Turnbuckles feature an open frame allowing view of the threads.

Definition: Often called bottlescrews, these mechanical devices consist of an open frame with two threaded ends connected to eye bolts, hooks, or jaws.
Design: The open body allows for easy visual inspection, lubrication, and maintenance. Available in stainless steel, bronze, and galvanized steel.
Functionality: Features one left-hand and one right-hand thread. Rotating the central frame adjusts both ends simultaneously.
Applications: Widely used in marine rigging, construction, and general tensioning.

Key Differences Summary

Body Design Rigging screws generally have a closed (tubular) body, protecting the threads. Turnbuckles have an open body, allowing for inspection.
Thread Types Rigging screws typically use different handed threads on each end for fine adjustment. Turnbuckles use standard LH/RH threads for rapid adjustment.
Usage Context Turnbuckles are preferred where frequent adjustments and inspection are needed. Rigging screws are often preferred for permanent installations where aesthetics or thread protection is prioritized.