Kee Klamp Tees & Swivel Sockets
Kee Klamp tees and swivel sockets form the T-junctions, mid-rail connections, and adjustable-angle joints at the heart of any tubular structure. Choose single-, double-, and three-socket tees—Type 10 (A10 split), 12/A12 45° tee, 16 clamp-on, 19 adjustable side outlet, 21/A21 90° side outlet, 25 three-socket, 29 30–60°, 8 angle tee, 88 three-socket angle, and 114 swivel tee—plus C50, F50, M50, MH50, C51, M51, MH51, C52, M52, C53, and M53 swivel sockets for variable-angle work. Cast from malleable iron to ASTM A47 and hot-dip galvanized to ASTM A123, each slips onto Schedule 40 pipe and locks with a case-hardened hex set screw—no welding, threading, or special tools.
No-Weld, Slip-On Assembly
Kee Klamp tees and sockets are part of a slip-fit pipe system: components connect to plain-end Schedule 40 pipe and lock with a case-hardened hex (Allen) set screw—no welding, threading, or hot-work permits. Tighten to spec with a ratchet wrench and the joint is ready to carry load, so a railing or frame can be built, adjusted, or extended on site with basic hand tools.
OSHA-Ready & Corrosion-Resistant
Tees and sockets are malleable iron cast to ASTM A47 (grade 32510) and hot-dip galvanized to ASTM A123 for indoor or outdoor service. Kee Klamp is a component system: built into a 42" guardrail with the correct pipe, anchoring, and post spacing, sizes 7, 8, and 9 help the assembled system meet OSHA 29 CFR 1910.29 and 1926.502 design loads—compliance is a property of the installed railing, not any single fitting.
FAQs
1. What pipe sizes do Kee Klamp tees and sockets fit?
Kee Klamp comes in eight pipe sizes from 1/4" to 2" (component sizes 2 through 9), and the size is the last digit of the part number. The key mapping is 5 = 3/4", 6 = 1", 7 = 1-1/4", 8 = 1-1/2", and 9 = 2". So a 10-8 fits 1-1/2" pipe and a 21-9 fits 2". Common railing sizes are 6, 7, 8, and 9.
2. How do I install them without welding?
Every fitting slips over plain-end Schedule 40 pipe and locks with a case-hardened hex (Allen) set screw tightened with a ratchet wrench. There is no welding, no threading, and no special tools required, so you can cut, assemble, and adjust the frame on site—and reconfigure it later without cutting the pipe.
3. How strong is the connection, and can it meet OSHA?
Each set screw supports a 2,000 lb (907 kg) axial load when tightened to 29 ft-lb (39.3 N-m), with a 2:1 safety factor. Used with the correct Schedule 40 pipe, anchoring, and post spacing, sizes 7, 8, and 9 can build a 42" guardrail that meets OSHA’s 200 lb top-rail design load. Compliance is a property of the assembled, installed system—not any single fitting.
4. What is the difference between a tee and a swivel socket?
A tee joins pipes at a fixed angle—usually 90°—to form T-junctions and mid-rail connections. Swivel sockets (C50, F50, M50, C51, C52, C53, M53 and related) pivot to lock at variable angles, so you can build braces, diagonals, and adjustable joints where the geometry is not square.
5. Which tee should I use for mid-rail versus a side outlet?
Type 10 is a single socket tee for mid-rail and junction points; 21/A21 is a 90° side outlet tee; 19 is an adjustable side outlet tee; 12/A12 gives a 45° branch; 25 and 88 are three-socket tees; and 114 is a swivel tee. Choose by branch angle and how many pipes meet at the joint.
6. Can I build adjustable-angle joints for ramps and stairs?
Yes. Swivel sockets such as C50/F50/M50/MH50 (single), C51/M51/MH51 (double), C52/M52 (corner), the C53 adjustable three-way, and the M53 variable-angle fitting lock at the angle you set—ideal for ramp rails, stair rails, and sloped braces. Set the angle, then tighten the hex set screw to fix the joint.
7. What material are the fittings, and are they corrosion resistant?
Kee Klamp fittings are malleable iron castings to ASTM A47 (grade 32510), hot-dip galvanized to ASTM A123 for indoor and outdoor corrosion resistance. They pair with standard Schedule 40 steel pipe to ASTM A53. Aluminum Kee Lite and Kee Koat powder-coat options are also available for lighter or coated assemblies.