Transcription of I FN DIN 6921 CAP SCREWS & BOLTS Flange Bolts
1 571 METRIC FASTENERSCAP SCREWS & BOLTSDIN 6921 Hex Flange BoltsDIN 6921 Nominal SizeThread PitchEFGDHUBBody DiameterWidth Across FlatsWidth Across CornersTotal Head HeightWrenching HeightFlange Edge ThicknessFlange on Length12 thru 16mm: thru 30mm: thru 50mm: mm55 thru 80 mm: mm90 thru 120 mm: mm130 thru 180 mm: mmDescriptionA one-piece hex washer head bolt with a flat bearing surface, made of medium carbon or high-alloy one-piece hex washer head bolt with a flat bearing surface, made of corrosion resistant stainless / AdvantagesPrimary use for Class bolt is on truck cassis frames. The Flange elimi-nates the need for a flat washer and helps compensate for a misaligned hole. When used with a proper class Flange nut, the bolt system resists bolt slippage by distributing the clamp load over a wide use in low-strength applications where resistance to environ-mental corrosion is a primary carbon steel chemical composition: Carbon- - ; Phosphorous- max; Sulphur- maxClass alloy steel chemical composition: Carbon- - ; Phosphorous- max; Sulphur- maxClass A2-70 Tempering Temperature425 C Minimum-Tensile StrengthClass : 800 N/mm2 min.
2 ; Class : 1040 N/mm2 N / mm2 Rockwell HardnessClass : Rockwell C22 - 32.; Class : Rockwell C32 - 39-Proof StressClass : 640 N/mm2 min.; Class : 940 N/mm2 are available in various finishes including black phosphate, zinc, or with a plain SCREWS are usually supplied without a supplemental 6921 Flange BoltstHreaD leNgtHs (lt) For DIN 6921 Hex Flange BoltsDIN 6921 Nominal SizeThread PitchFor Lengths <= 125mmFor Lengths > 125mm <= 200mmFor Lengths > page prints with a watermark
