Building hardware materials
a) Fasteners HS 7318
- Hex bolt and heavy hex nut and washer and anchor. Pain grade and coating under spec.
- Stainless A2 and A4. Pain wrong alloy mix. Do PMI and hardness and salt spray.
- Drywall screw and wood screw. Pain brittle fracture.
b) Rivets HS 7318 23
- Blind rivet and solid rivet. Pain shear and tensile mismatch.
- Aluminum and stainless rivet. Finish and mandrel strength variance.
c) Building adhesive and sealant HS 3506
- Construction adhesive tube and pail. Pain ASTM or AAMA claim mismatch.
- Tile adhesive and grout additive. Pain low solids and poor bond strength.
d) Door and window hardware HS 8302
- Hinge and lock and latch and closer and handle. Pain base metal quality and plating life.