Hex head bolts — partial thread
Dimensions, head geometry and thread-length reference.
Open reference →BIS Engineering Library
Fastener technical data.
A searchable index of dimensional standards, material specifications, threads, grades, weights, coatings and certification references used in industrial fastener enquiries.
88 references
Hex head screws — full thread
Metric hex screw dimensional reference.
Open reference →Hex bolts — legacy DIN
Legacy dimensional reference; compare against ISO 4014.
Open reference →Hex screws — legacy DIN
Legacy dimensional reference; compare against ISO 4017.
Open reference →Socket head cap screws
Socket-head geometry and strength-system reference.
Open reference →Socket head cap screws — legacy DIN
Legacy designation commonly seen on enquiries.
Open reference →Hexagon socket countersunk screws
Countersunk socket fastener reference.
Open reference →Countersunk socket screws — legacy DIN
Legacy countersunk socket designation.
Open reference →Button head socket screws
Low-profile socket screw reference.
Open reference →Carriage bolts
Round-head square-neck bolt reference.
Open reference →Lifting eye bolts
Eye-bolt dimensional standard; load rating requires governing standard review.
Open reference →Carbon steel bolts and studs
General-purpose ASTM carbon-steel bolting grades.
Open reference →Structural bolts
High-strength structural bolting system.
Open reference →High-strength structural bolts
Higher-strength structural bolting system.
Open reference →High-strength structural bolting
British structural bolting reference used on some projects.
Open reference →Hexagon regular nuts — style 1
Metric nut dimensions and classes.
Open reference →Hexagon nuts — legacy DIN
Common legacy nut designation.
Open reference →Hexagon high nuts — style 2
Higher nut style reference.
Open reference →Hexagon thin nuts
Thin / jam-nut dimensional reference.
Open reference →Thin hex nuts — legacy DIN
Legacy half-nut / lock-nut reference.
Open reference →Nylon insert prevailing torque nuts
Legacy nylock-nut reference.
Open reference →Prevailing torque hex nuts
Non-metallic insert prevailing-torque nut reference.
Open reference →Heavy hex nuts
Common matching nut for ASTM A193 B7 bolting.
Open reference →Stainless pressure-service nuts
Common pairing for B8 / B8M bolting.
Open reference →Carbon/alloy steel nuts
Structural and general ASTM nut grades.
Open reference →Preloaded structural assemblies
Matched structural bolting system reference.
Open reference →Stainless steel nuts
Mechanical properties for corrosion-resistant stainless nuts.
Open reference →Plain washers — normal series
Metric plain-washer dimensions.
Open reference →Plain washers — legacy DIN
Legacy flat washer reference.
Open reference →Chamfered plain washers
Metric chamfered washer dimensions.
Open reference →Chamfered washers — legacy DIN
Legacy chamfered flat washer reference.
Open reference →Hardened structural washers
Structural washer requirements for high-strength bolting.
Open reference →Spring lock washers — rectangular section
Indian standard flat/rectangular-section spring washer.
Open reference →Spring washers — square section
Indian standard square-section spring washer.
Open reference →Threaded rods / studs
Current DIN threaded-rod reference commonly used in procurement.
Open reference →Threaded rod — legacy DIN
Legacy threaded-rod designation.
Open reference →Alloy-steel bolting
High-temperature / pressure-service stud material.
Open reference →Stainless bolting
304 / 316-type stainless pressure-service bolting.
Open reference →High-temperature alloy bolting
Higher-temperature alloy-steel bolting reference.
Open reference →Low-temperature bolting
Low-temperature alloy-steel bolting reference.
Open reference →Anchor-bolt materials
Material grades for drawing-controlled anchor bolts.
Open reference →Pipe / structural U-bolts
Inside width, pipe OD, leg length, thread length and set calculation.
Open reference →Straight / L / J / plate anchors
Developed geometry, plate and set calculation.
Open reference →Metric thread pitch series
Major diameter, pitch, stress area and tap-drill reference.
Open reference →Metric fine-pitch threads
Use pitch from the enquiry or governing drawing.
Open reference →Unified National Coarse
Imperial coarse thread reference.
Open reference →Unified National Fine
Imperial fine thread reference.
Open reference →8 threads per inch series
Common pressure-service stud thread series in larger diameters.
Open reference →Metric thread tolerances
Tolerance classes and limits for metric screw threads.
Open reference →Unified inch screw threads
UNC/UNF/UN thread form and tolerance reference.
Open reference →Across-flats changes
Key differences such as M10, M12, M14 and M22.
Open reference →Thread-root strength reference
Calculated stress area used in tensile calculations.
Open reference →Approximate pre-tap drill
Starting reference only; tool/process controls final drill selection.
Open reference →s, e and k
Across flats, across corners and head height.
Open reference →s and m
Nut across-flats and nominal height.
Open reference →d1, d2 and s
Inside diameter, outside diameter and thickness.
Open reference →Effective engaged length
Conceptual load-transfer guide.
Open reference →Metric bolt property classes
4.6, 5.6, 8.8, 10.9 and 12.9 mechanical-property system.
Open reference →Metric nut property classes
Matching nut mechanical properties.
Open reference →Stainless bolts and screws
A2 / A4 stainless fastener property classes.
Open reference →SAE bolt grades
Grade 2, Grade 5 and Grade 8 marking/strength system.
Open reference →Pressure-service bolting materials
B7, B8, B8M, B16 and other grades.
Open reference →Pressure-service nut materials
2H, 7, 8, 8M and related grades.
Open reference →Low-temperature bolting
L7, L7M and related low-temperature grades.
Open reference →Hot-dip galvanized coatings
General HDG coating requirements for fabricated iron/steel articles.
Open reference →HDG coating on fasteners
Fastener-specific hot-dip galvanizing reference.
Open reference →Zinc coating on hardware
Hot-dip zinc coating for iron/steel hardware.
Open reference →Atmospheric corrosivity
C1–CX corrosivity framework used in coating-life screening.
Open reference →Protective paint environment classes
Useful environment terminology for corrosion planning.
Open reference →Non-electrolytic coating family
Low-thickness corrosion protection often used on high-strength fasteners.
Open reference →Low-friction protective coatings
Project-approved coating systems for corrosion/friction control.
Open reference →Overtapped galvanized nuts
Why mating nuts need controlled thread allowance.
Open reference →Metric hex bolt mass
Approximate kg per 1,000 pieces.
Open reference →Hex / lock / heavy hex nut mass
Approximate kg per 1,000 pieces.
Open reference →Plain / structural / spring washer mass
Approximate kg per 1,000 pieces.
Open reference →1 m / 2 m / 3 m rods
BIS commercial threaded-rod weight reference.
Open reference →Single and multi-line orders
Weight and ₹/kg estimate with sets/accessories.
Open reference →Pipe-size and geometry based
Approximate rod/set weight from geometry.
Open reference →Straight / L / J geometry
Approximate rod and plate weight.
Open reference →Procurement mass conversion
Useful for bulk packing, freight and quoting.
Open reference →Count / mass conversion
Approximate conversion from unit mass.
Open reference →Connection-count estimator
Preliminary BOQ quantity worksheet; not structural design.
Open reference →Inspection certificate guide
How to trace heat/lot, chemistry and mechanical results.
Open reference →Material certificate review
Buyer-side certificate review points and red flags.
Open reference →Certificate of conformity
Order/specification declaration and traceability reference.
Open reference →Identification chain
Link supplied fasteners to production and test records.
Open reference →Grade identification
Visual reference for common metric, SAE and ASTM systems.
Open reference →DIN / ISO / ASTM / IS
Procurement cross-reference with substitution cautions.
Open reference →No matching technical references.
Use of data: this index is a procurement and enquiry aid. The current edition of the governing standard, approved drawing and project specification control manufacture and acceptance.