Fastener Specifications
The reference tables a buyer or engineer needs before a part goes on a drawing: thread sizes and pitches, fraction-to-millimetre conversion, property classes and head markings, head styles, drive styles and point types. Every table is built from published standards and is free to use.
We are a custom manufacturer, not a stockist — so these pages do not filter a catalogue of parts in a warehouse. They tell you what the standard says, and then you send the drawing and we quote it.
- Reference pages
- 10
- Table rows
- 308
- Precision
- 0.01 mm
- Quote
- Within 24 h
Browse by parameter
Metric Fasteners & Metric Machined Parts — DIN 912, 933, 934
What is the pitch, across-flats and head height for M3 to M64?
1 table · 19 rows
Inch / Imperial Fasteners — UNC & UNF Threads
How many threads per inch for #0 up to 1-1/2 in, coarse and fine?
1 table · 24 rows
Thread Standards Guide — UNC, UNF, BSP, NPT, Metric
Metric and unified side by side — and why they are not interchangeable.
2 tables · 43 rows
Metric to Inch Conversion Chart
Fractions, decimal inches and millimetres, step by step.
2 tables · 84 rows
Bolt Grade Markings and Strength
What do the lines and numbers on a bolt head mean?
3 tables · 24 rows
Fastener Head Types
Hex, socket, button, flat, carriage, flange, weld — which one and why.
1 table · 16 rows
Screw Drive Types
Phillips, Pozidriv, hex socket, Torx, square, security.
1 table · 15 rows
Fastener Point Types
Self-tapping, self-drilling, thread-cutting and set screw points.
1 table · 16 rows
DIN Standard Parts Machined to Spec
DIN 931, 933, 912, 934 — and their ISO and ASME equivalents.
1 table · 26 rows
ANSI & ASTM Standard Parts — A307, A325, A193
Which ASME or ASTM standard covers which part.
1 table · 32 rows
Why there is no filter on this page
A distributor's filter is a picking tool. It narrows a warehouse down to the exact box on the shelf so you can buy it. We do not hold stock and we do not sell from a catalogue — every part we make starts as your drawing.
So a filter here would end nowhere. What is useful instead is the standard itself: the pitch, the across-flats, the grade marking, the point style. Read them here, mark them on your drawing, and we quote the part you actually need.
What we can hold
Precision features
0.01 mm
General tolerance
ISO 2768-m
Materials
Stainless 301/303/304/304L/316/316L/410/416/17-4PH · carbon 1045/1215/12L14 · alloy 4130/4140 · aluminium 2024/5052/6061/7075 · brass · bronze · copper · titanium
Documents
Material certificate (MTR) and pre-shipment photos with every batch
Found the size you need?
Send the drawing and we reply within 24 hours with DFM feedback, a process route and a price. Samples from 1 piece, production from 50 pieces, shipped from Qidong City, Jiangsu Province, China.
Request a quote