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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 ETAG 006.

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