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Purlin Fastener

OMG Purlin Fasteners are designed for attaching single-ply membrane systems to structural steel purlins (12-18 gauge) in standing seam metal roof retrofit applications. The OMG Purlin Fastener is available in five sizes from 3.75- to 8-inches.

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Features & Benefits

Features & Benefits

  • The OMG Purlin Fastener drills through up to 12 gauge steel in seconds.
  • The 3/4-in. drill point allows the fastener to be drilled through the purlin before the threads engage into the the standing seam metal roof.
  • Low profile hex head has a smooth surface to prevent damage to the membrane.
Product Use

Product Use

OMG Purlin Fasteners must penetrate the purlin a minimum of 1-in. This ensures a minimum of 1/4-in. thread penetration into the structural member. Using a screw gun with a maximum of 1800 RPM, drive the fastener through the purlin until a slight depression is seen around the plate.

Prior to job start, contact OMG to perform a pull out test to determine deck suitability and pullout values.

Note: Caution should be taken not to overdrive the fastener causing stress plate surface to deflect more than 1/16-in. Prior to job bid, contact OMG to visit the job site and inspect the deck.

Technical Data

Technical Data

Thread Diameter: .210-in. (5.3 mm)
Head Diameter: .435-in. (11 mm)
Head Style: ¼-in. Hex Head
Shank Diameter: .170-in. (4.31 mm)

Coating: OMG CR-10 corrosion resistant coating passes the corrosion requirements of FM Approval Standard 4470 and EAD 030351-00-0402.

Packaging Information

Packaging Information

Cat. No. Length (in) Thread Length (in) Packaging Quantity Weight (lbs)
PUR334 3 3/4 FULL 500 13
PUR434 4 3/4 3 500 16
PUR534 5 3/4 3 500 20
PUR700 7 3 500 24
PUR800 8 3 500 27