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HPS Performance Heavy Duty Stainless Steel Spring Loaded T-Bolt Hose Clamp

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HPS Stainless Steel Spring Loaded T-Bolt Hose Clamp provides high strength and a 360 degree seal. The added spring is there to automatically adjusts the clamp diameter to compensate for the expansion and contraction of hose when temperatures or the pressure fluctuate. HPS spring loaded clamps are reusable. Design to meet or exceeds SAE Spec. J1508 for T-bolt clamps. The clamps has a floating bridge and rolled edges to protect soft hose. The lock nut has a nylon insert to prevent it from backing out. Tighten with a 7/16" socket wrench

The HPS constant tension t bolt clamps are widely used in the charge air cooler system (cac), aircraft, automotive, truck and heavy-duty vehicle, industrial, hardware/plumbing, and marine industries.

Technical Specification
- Superior welded construction
- Floating bridge and rolled edges to protect soft hoses
- 3/4" wide 300 Series Stainless Steel Band and Trunnion
- Zinc Plated T-bolt, Nut and Springs
- 7/16" head Nylon Nut
- Meets or exceeds SAE Spec. J1508 for T-Bolt clamps
- Max. Torque Spec: 75 in. lbs.


Question: What is the best way to determine the clamp size you'll need?
1. If you are buying the clamps for a pipe or a hose that is NOT made by HPS, simply measure the outside diameter (O.D.) of your final hose assembly or pipe. Locate the HPS part number with the measured O.D. falls in the middle of the effective size range. You can also use the size # as the reference if you already know the SAE # of the clamps you need.
2. If you are buying the clamps for our HPS silicone hoses, you can simply refer to the chart listed above. The chart shows the clamps part number that would fit on HPS Silicone Hoses with the INSIDE DIAMETER.

Question. If a hose or piping OUTSIDE diameter is 2-1/8" (54mm), should I pick t-bolt clamp size # 36 or size # 40?
The correct choice is size # 36. You would need the t-bolt clamp effective size to be 51mm-59mm so the HOSE OUTSIDE Diameter would fall in between the effective size range. Remark: Size # 48 fits the HPS Silicone Hose with INSIDE diameter of 2-1/8" (54mm), but it does NOT fit hose or piping with OUTSIDE diameter of 2-1/8" (54mm).

Question. If a hose has INSIDE diameter = 2-3/8" (60mm), what part# should I choose?
In this case, we would NOT be able to figure out what t-bolt clamp to be used until we know the OUTSIDE diameter of the hose. An obvious choice is size # 56 if your hose has 5mm wall thickness (all HPS silicone hoses have 5mm wall thickness unless otherwise stated). However, it might vary since different hose has different wall thickness; if your hose wall thickness is 4mm, then the OUTSIDE diameter would be 60mm+4mm +4mm = 68mm, a t-bolt clamp with effective range size # 52 would be a better fit for a hose with 2-3/8" ID and 4mm wall thickness.

Size Chart

Size # HPS Part# Effective Size Range Fits HPS Hoses with INSIDE Diameter
40 SLTC-212 2.13"-2.44" (54mm-62mm) 1-7/8" (48mm)
44 SLTC-225 2.25"-2.56" (57mm-65mm) 2" (51mm)
48 SLTC-238 2.36"-2.68" (60mm-68mm) 2-1/8" (54mm)
52 SLTC-250 2.50"-2.80" (63mm-71mm) 2-1/4" (57mm)
56 SLTC-265 2.64"-2.95" (67mm-75mm) 2-3/8" (60mm)
60 SLTC-275 2.76"-3.07" (70mm-78mm) 2-1/2" (63mm)
64 SLTC-287 2.87"-3.19" (73mm-81mm) 2-9/16" (65mm), 2-11/16" (68mm)
68 SLTC-300 2.99"-3.31" (76mm-84mm) 2-3/4" (70mm)
76 SLTC-325 3.27"-3.58" (83mm-91mm) 3" (76mm)
84 SLTC-350 3.5"-3.82" (89mm-97mm) 3.25" (83mm)
88 SLTC-362 3.62"-3.94" (92mm-100mm) 3-3/8" (86mm), 3-1/2" (89mm)
92 SLTC-375 3.75"-4.06" (95mm-103mm) 3-1/2" (89mm)
100 SLTC-400 4"-4.33" (102mm-110mm) 3-3/4" (95mm)
108 SLTC-425 4.25"-4.57" (108mm-116mm) 4" (102mm)
116 SLTC-450 4.5"-4.8" (114mm-122mm) 4-1/4" (108mm)
124 SLTC-475 4.77"-5.08" (121mm-129mm) 4-1/2" (114mm)
132 SLTC-500 5"-5.31" (127mm-135mm)
140 SLTC-525 5.24"-5.55" (133mm-141mm) 5" (127mm)
156 SLTC-575 5.75"-6.06" (146mm-154mm) 5-1/2" (140mm)
172 SLTC-625 6.26"-6.57" (159mm-167mm)
180 SLTC-650 6.5"-6.81" (165mm-173mm)
188 SLTC-675 6.75"-7.06" (172mm-180mm) 6-1/2" (165mm)
204 SLTC-725 7.25"-7.56" (184mm-192mm) 7" (178mm)
220 SLTC-775 7.75"-8.06" (197mm-205mm) 7-1/2" (190mm)
236 SLTC-825 8.25"-8.56" (210mm-218mm) 8" (200mm)


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