Hinged Heads and Blocks   Hinged Heads - Flip Top • Nema 4 Rated • Flip-Top Design for Easy Access and Closure • Hinge Pins and Latches of Stainless Steel • Silicone Gasket, Temperature Rated to 6000 F. • Provisions for Security Tags • Accepts BH741, BH742 & BH743 Series Blocks • Accepts BH684 Series Blocks (BH684-6 in polypropylene heads only) • Polypropylene Continuous Rating: 1980 F. • Conduit Port Size: 3/4" NPT ADD PREFIX “B” TO PART NUMBERS TO ORDER Plastic Terminal Blocks • Will Fit BH701 - BH709 Heads • Will Fit BH680, 682 & BH683 Series Heads • Stepped Center Hole for Spring Loading ADD PREFIX “B” TO PART NUMBERS TO ORDER Aluminum Screw Cover Thermocouple Heads & Blocks • Meets NEMA 4 requirements for indoor/outdoor nonhazardous use • 825F Graphite Gasket ADD PREFIX “B” TO PART NUMBERS TO ORDER Cast Iron Screw Cover Thermocouple Heads & Blocks • Meets NEMA 4 requirements for indoor/outdoor nonhazardous use • 825F Graphite Gasket   ADD PREFIX “B” TO PART NUMBERS TO ORDER Stainless Steel Screw Cover Thermocouple Heads & Blocks • Meets NEMA 4X. FDA requirements for indoor/outdoor non-hazardous use • 825F Graphite Gasket ADD PREFIX “B” TO PART NUMBERS TO ORDER

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Terminal Blocks 11/16" Thick Single Block Brass Terminals PART NUMBERS BH741 BH695 Single Block, Brass Terminals   1-5/32" Thick Duplex Block Brass Terminals PART NUMBER BH742   7/8" Thick Triplex Block ADD PREFIX “B” TO PART NUMBERS TO ORDER

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Nylon Heads & Hinged Aluminum Heads and Blocks (Din Standard) Nylon Head – 1/2" x 1/2" NPT Note: UL Rated PART NUMBER BH770 Aluminum Hinged Head 1/2" x 1/2" NPT PART NUMBER BH771

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Terminal Blocks   Ceramic Standard Terminal Blocks No Base Plate PART NUMBERS BH772-2 2 Terminal BH772-3 3 Terminal BH772-4 4 Terminal Ceramic Terminal Blocks w/ Solder Hooks No Base Plate (Loose Base Plate Available - Inquire) PART NUMBERS BH773-2-N 2 Terminal BH773-4-N 4 Terminal BH773-6-N 6 Terminal Spring Mount Terminal Blocks w/ Solder Hooks Steel Base Plate Spring Mount PART NUMBERS BH774-2 2 Terminal BH774-4 4 Terminal BH774-6 6 Terminal

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Heads and Covers   Miniature Nickel-Plated Steel Heads • 2, 3, or 4 Terminal • “O” Ring Moisture Seal (Remove for Free Fit if Desired) • Neoprene Cap Grommet Standard • 1/4" NPT Process Opening – Standard • 1/8" NPT Process Opening – Optional (add-1 to P/N) • 5/16" Compression Fitting in Cover – Optional (Add "- C" to Part Number) PART NUMBERS BH791 2 Terminal 1/4" NPT Miniature Head BH791-1 2 Terminal 1/8" NPT Miniature Head BH792 3 Terminal 1/4" NPT Miniature Head BH792-1 3 Terminal 1/8" NPT Miniature Head BH793 4 Terminal 1/4" NPT Miniature Head BH793-1 4 Terminal 1/8" NPT Miniature Head

Micro Heads

PART NUMBERS BH785-U-2 Single Circuit 1/8" Sheath BH785-U-4 Single Circuit 1/4" Sheath   Miniature Die Cast Aluminum Screw Cover • Miniature Head • Burnished Die Cast Aluminum • 2 Terminal Block, or 4 Terminal Block • 1/2 NPT Process, 1/2 NPT Conduit • Includes Compression Fitting Adaptor • Includes Rubber Ferrule PART NUMBERS BH775-1 Head w/ 2 Terminal Block BH775-2 Head w/ 4 Terminal Block BH776-1 2 Terminal Block only BH776-2 4 Terminal Block only   Thermoplastic Screw Cover Heads The BH781-3 and BH781-6 heads are molded from white unpigmented polypropylene. Both heads meet NEMA 4X requirements for indoor or outdoor non-hazardous use to provide protection against dust, rain, splashing water and hose directed water. Although these thermoplastics are attacked by strong acids, they provide good resistance to most acid solutions, alkalines and salt water. They provide good weathering resistance to sunlight. The white polypropylene head is FDA compliant for use in sanitary applications. These heads, and the Bunan O-Ring, have a continuous use temperature rating of 2500 F. The cover is chained to the body with stainless steel chain and pins. All heads have 1/2" NPT process openings and 3/4" NPT conduit openings. ADD PREFIX “B” TO PART NUMBERS TO ORDER Miniature Plastic Heads Use HBPC series Braze Plugs, HCB Series Brass Compression Fittings, or HCS Series Stainless Compression Fitting for connection to TC Probe. ADD PREFIX “B” TO PART NUMBERS TO ORDER

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Nipples and Springs   Spring-Loaded Nipples: 316 Stainless Steel - 1/2 x 1/2 NPT NOTE: Inconel or 17-7PH Spring (Included) ADD PREFIX “B” TO PART NUMBERS TO ORDER   Weld/Braze Nipples ADD PREFIX “B” TO PART NUMBERS TO ORDER   Sheath Springs NOTE: • Stainless Steel or 17-7 PH • .440 OD springs fit H743 series blocks • Other spring loading applications ADD PREFIX “B” TO PART NUMBERS TO ORDER