For Domestic (for India) Email: sales3@jfengg.com / Phone: +91 9833323564 / +91-22-6639 3672
For Export (for other than India) Email: export3@jfengg.com / Phone: +91-9833323751 / +91-22-23634937
JF Engineering Products LLP

DIN 931 Standard

Dimensions for DIN 931
Size Width Across Flat (s) Head Height (k) Thread Length
DIN 931 ISO 4014 DIN 931 ISO 4014 DIN 931 Length (in MM) ISO 4014 Length (in MM)
Min Max Min Max Min Max Min Max ≥125 >125≥200 ≥200 ≥125 >125≥200 ≥200
M2 3.82 4.00 3.82 4.00 1.28 1.52 1.275 1.525 10 - - 10 - -
M3 5.32 5.50 5.32 5.50 1.88 2.12 1.875 2.125 12 - - 12 - -
M4 6.78 7.00 6.78 7.00 2.68 2.92 2.675 2.925 14 - - 14 - -
M5 7.78 8.00 7.78 8.00 3.35 3.65 3.35 3.65 16 22 - 16 - -
M6 9.78 10.00 9.78 10.00 3.85 4.15 3.85 4.15 18 24 - 18 - -
M8 12.73 13.00 12.73 13.00 5.15 5.45 5.15 5.45 22 28 41 22 - -
M10 16.73 17.00 15.73 16.00 6.22 6.58 6.22 6.58 26 32 45 26 - -
M12 18.67 19.00 17.73 18.00 7.32 7.68 7.32 7.68 30 36 49 30 - -
M14 21.67 22.00 20.67 21.00 8.62 8.98 8.62 8.98 34 40 53 34 40 -
M16 23.67 24.00 23.67 24.00 9.82 10.2 9.82 10.18 38 44 57 38 44 -
M18 26.67 27.00 26.67 27.00 11.28 11.7 11.285 11.715 42 48 61 42 48 -
M20 29.67 30.00 29.67 30.00 12.28 12.7 12.285 12.715 46 52 65 46 52 -
M22 31.61 32.00 33.38 34.00 13.78 14.2 13.785 14.215 50 56 69 50 56 69
M24 35.38 36.00 35.38 36.00 14.78 15.2 14.785 15.215 54 60 73 54 60 73
M27 40.00 41.00 40.00 41.00 16.65 17.4 16.65 17.35 60 66 79 60 66 79
M30 45.00 46.00 45.00 46.00 18.28 19.1 18.28 19.12 66 72 85 66 72 85
M33 49.00 50.00 49.00 50.00 20.58 21.4 20.58 21.42 72 78 91 - 78 91
M36 53.80 55.00 53.80 55.00 22.08 22.9 22.08 22.92 78 84 97 - 84 97
M39 58.80 60.00 58.80 60.00 24.58 25.4 24.58 25.42 84 90 103 - 90 103
M42 63.10 65.00 63.10 65.00 25.58 26.4 25.58 26.42 90 96 109 - 96 109
M45 68.10 70.00 68.10 70.00 27.58 28.4 27.58 28.42 96 102 115 - 102 115
M48 73.10 75.00 73.10 75.00 29.58 30.4 29.58 30.42 102 108 121 - 108 121
M52 78.10 80.00 78.10 80.00 32.5 33.5 32.5 33.5 - 116 129 - 116 129
M56 82.80 85.00 82.80 85.00 34.5 35.5 34.5 35.5 - 124 137 - - 137
M60 87.80 90.00 87.80 90.00 37.5 38.5 37.5 38.5 - 132 145 - - 145
M64 92.80 95.00 92.80 95.00 39.5 40.5 39.5 40.5 - 140 153 - - 153
M72 102.80 105.00 -- -- 44.5 45.5 -- -- - 156 169 - - -

Marking and Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All pipes are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At JF Engineering Products LLP, all fasteners are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report

Shipping Policy

Delivery time and delivery dates are based on the "type and quantity" of steel ordered. Our sales team will provide a delivery schedule when quoting to you. On rare occasions the delivery schedule may change so please check with our sales department when placing any orders.

Orders will be sent out within 2-3 business days, and may take up to 5-10 business days in transit. If fastener is out of stock, orders may take up to 2-4 weeks to ship. JF Engineering Products LLP will notify buyer if this situation occurs..

Uses & Application

JF Engineering Products LLP take immensure pleasure in introducing itself as one of the leading Manufacturer & Exporter of high quality fasteners to meet the customer ultimate requirements in the fields of:

Chemical Oil Mills Petrochemical Mining Refineries Construction
Fertilizers Shipbuilding Power Plant Steel Plant Nuclear Power Offshore
Oil & Gas Defence Paper Ports Breweries Railway
Cement Engineering Co. Sugar & Government Org. etc.

Our Products