{"product_id":"johns-manville-purlin-fasteners-steel-coated-membrane-screws-12-gauge-with-1-4-in-hex-head","title":"Johns Manville Purlin Fasteners, Steel-Coated Membrane Screws, #12 Gauge with 1\/4 in. Hex Head, 3.75 in. to 7 in., 500-Count Box","description":"\u003ch1\u003eJohns Manville Purlin Fasteners, Steel-Coated Membrane Screws, #12 Gauge with 1\/4 in. Hex Head, 3.75 in. to 7 in., 500-Count Box\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eJohns Manville Purlin Fasteners are steel-coated roof membrane fasteners with a 1\/4 in. hex head and 3\/4 in. drill point, engineered for attaching membranes to structural steel purlins. Choose from four lengths: 3.75 in., 4.75 in., 5.75 in. and 7 in. Each box contains 500 fasteners in mill finish and pairs with JM membrane systems over steel-deck roofing.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel-Coated Build:\u003c\/strong\u003e Fasteners are made of coated steel for secure membrane attachment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Drilling Point:\u003c\/strong\u003e The 3\/4 in. drill point bores into structural steel purlins without pre-drilling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Head Drive:\u003c\/strong\u003e A 1\/4 in. hex head accepts standard hex-driver bits for fast installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound Plate:\u003c\/strong\u003e Includes a 2 3\/8 in. (6.03 cm) round plate for holding power at the membrane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurlin Range:\u003c\/strong\u003e Designed for structural steel purlins from 12 to 18 gauge (2.77 mm to 1.25 mm).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour Lengths:\u003c\/strong\u003e Available in 3.75 in., 4.75 in., 5.75 in. and 7 in. lengths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk Box:\u003c\/strong\u003e Sold 500 fasteners per box for commercial roofing jobs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJohns Manville\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSell unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 box, 500 fasteners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJM Purlin Fasteners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.75 in., 4.75 in., 5.75 in., 7 in., each 500\/box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoated steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor \/ finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire gauge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e#12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4 in. hex head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrill point\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 3\/8 in. (6.03 cm) round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 per box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDeck type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStructural steel purlins 12-18 gauge (2.77 mm-1.25 mm) metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoof membrane attachment to structural steel purlins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eCoverage \u0026amp; How Much You Need:\u003c\/h2\u003e\u003cp\u003eOne box covers roughly 500 membrane attachment points; fastener layout and spacing follow the membrane manufacturer's specified fastening pattern for the roof zone.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eDesigned for use with roof membranes installed over structural steel purlins from 12 to 18 gauge (2.77 mm to 1.25 mm). Select length so the drill point and threads fully engage the purlin; drive tools and washers\/plates per the roofing system specification are sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: How many fasteners come in a box?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each box contains 500 fasteners, available in 3.75 in., 4.75 in., 5.75 in. and 7 in. lengths.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What decks are these fasteners designed for?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e They are designed for structural steel purlins ranging from 12 to 18 gauge (2.77 mm to 1.25 mm) metal.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Do I need to pre-drill?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the 3\/4 in. drill point is designed to penetrate the steel purlin directly.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What driver fits these screws?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 1\/4 in. hex head drives with a standard 1\/4 in. hex bit.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Which length should I choose?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Choose a length that secures the membrane plus insulation and fully engages the purlin; the four listed sizes cover common build-ups.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What finish are the fasteners?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The listed variants are mill finish coated-steel fasteners.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eMatch fastener length to the total assembly thickness so the screw penetrates well into the purlin without protruding through thin-gauge steel. These are intended specifically for structural steel purlin decks, not wood or lightweight concrete. Keep a hex driver with proper clutch settings on the screw gun to avoid stripping the 1\/4 in. hex head or overdriving the plate.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eWear eye protection and gloves when driving self-drilling screws; freshly cut fastener tips and shavings are sharp.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOrder Johns Manville Purlin Fasteners in your required length and get 500 steel-coated membrane screws per box.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Johns Manville","offers":[{"title":"4.75\" 500\/Box","offer_id":53522856968559,"sku":"JMF434P","price":254.0,"currency_code":"USD","in_stock":true},{"title":"5.75\" 500\/Box","offer_id":53522857001327,"sku":"JOH70000679","price":331.0,"currency_code":"USD","in_stock":true},{"title":"3.75\" 500\/Box","offer_id":53522857034095,"sku":"JMF334P","price":201.5,"currency_code":"USD","in_stock":true},{"title":"7\" 500\/Box","offer_id":53522857066863,"sku":"JMPF7","price":469.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/JMF434P_0.png?v=1790231314","url":"https:\/\/superarbor.io\/products\/johns-manville-purlin-fasteners-steel-coated-membrane-screws-12-gauge-with-1-4-in-hex-head","provider":"Super Arbor","version":"1.0","type":"link"}