Williams Form Engineering Corp. - Spin-Lock Mechanical Concrete Anchor Head Data

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Spin-Lock Concrete Anchor Head Data

Spin-Lock
Information

Spin-Lock
Design

Parts &
Accessories

Head
Assemblies

Spin-Lock Installation

Installation
Equipment

Case
Histories

Corrosion
Protection

The Williams Spin-Lock anchor assembly gives full 300˚ bearing area. The smooth shell design allows for maximum shell to concrete contact and eliminates “point of contact” created by serrated designs. The cone design supports the shell 300°, thereby eliminating any possible collapse of the shell under high load conditions. The thrust ring stop in front of the shell prevents any possible rebound of the expanded shell down the cone if subjected to impact loading. The Williams Spin-Lock anchor has been field proven on the world’s largest projects to far exceed in tension capacity any other production mechanical anchor on the market.

Type A - Short Shell & Cone	Type B - Long Shell & Cone
Type C - Long Shell & Cone with Flange	Coupled Head Assemblies

Type A - Short Shell & Cone

Head Assembly	Drill Hole Dia.	Bolt Dia. & Thread Form	Standard Cone Length & Part No.	Standard MAL Shell Length & Part No.	Overall Ass'y Length
A10	1-1/4" (32 mm)	1/2" - 13 NC (12 mm)	1-7/8" SC-114-4	1-7/8" SS-114	4-1/4" (108 mm)
A10	1-1/4" (32 mm)	5/8" - 11 NC (16 mm)	1-7/8" SC-114-5	1-7/8" SS-114	4-1/4" (108 mm)

Type B - Long Shell & Cone

Head Assembly	Drill Hole Dia.	Bolt Dia. & Thread Form	Long Cone Length & Part No.	Long MAL Shell Length & Part No.	Overall Ass'y Length
B14	1-3/4" (44 mm)	1" - 8 NC (25 mm)	3-3/4" LC-158-8	3-3/4" LS-175	8-1/4" (209.6 mm)
B20	2-1/2" (65 mm)	1-1/4" - 7 NC (32 mm)	4" LC-250	4" LS-250	12-5/8" (320.7 mm)
B20	2-1/2" (65 mm)	1-3/8" - 8 NC (35 mm)	4" LC-250	4" LS-250	-
B24	3" (76 mm)	1-1/2" - 6 NC (38 mm)	5-1/2" LC-300	5-1/2" LS-300	12-5/8" (320.7 mm)
B24	3" (76 mm)	1-3/4" - 5 NC (45 mm)	5-1/2" LC-300	5-1/2" LS-300	12-7/8" (327.0 mm)

Type C - Long Shell & Cone with Flange

Head Assembly	Drill Hole Dia.	Bolt Dia. & Thread Form	Long Cone w/ Flange Length & Part No.	Long MAL Shell Length & Part No.	Overall Ass'y Length
C14	1-3/4" (44 mm)	3/4" - 10 NC (20 mm)	4-1/4" LCF-175-6	3-3/4" LS-175	9" (228.6 mm)
		7/8" - 9 NC (22 mm)	4-1/4" LCF-175-7	3-3/4" LS-175	9-1/16" (230.2 mm)
		1" - 8 NC (25 mm)	4-1/4" LCF-175-8	3-3/4" LS-175	9-3/16" (233.4 mm)
C18	2-1/4" (57 mm)	1-1/8" - 7 NC (30 mm)	4-7/8" LCF-225-9	4" LS-225	10" (254 mm)
C18	2-1/4" (57 mm)	1-1/4" - 7 NC (32 mm)	4-7/8" LCF-225-11	4" LS-225	10-1/4" (260.4 mm)
C28	3-1/2" (89 mm)	1-7/8" - 5 NC (48 mm)	7" LCF-350-16	6" LS-350	15" (381 mm)
C28	3-1/2" (89 mm)	2"- 6 UN (51 mm)	7" LCF-350-16	6" LS-350	15-1/8" (384.2 mm)

Coupled Head Assemblies

Williams can manufacture Spin-Lock Anchor systems with the use of a transition coupling, which allows the anchor to be designed with a continuously workable thread-form. This is advantageous when the anchor length may need to be adjusted in the field due to variable site conditions. The transition coupling engages a continuously threaded U.N. bar into the head assembly and the All-Thread Bar (typically Grade 75 All-Thread Rebar or 150 KSI All-Thread-Bar) is attached to the other end of the coupling.