FREE Delivery Over £30 Nett
15,000+ Stock Lines
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Family Owned & Run
Celebrating 30 Years of Trading.
To mark 30 years of trading this month, we have reduced our carriage paid threshold to £30 nett.
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The M4 × 30mm A2 Stainless Steel Hexagon Head Set Screw is a fully threaded metric fastener manufactured from A2 (304) stainless steel. It is designed for bolted connections where good general corrosion resistance and a dependable mechanical fixing are required.
Manufactured to the DIN 933 specification, this set screw features an M4 coarse metric thread, a hexagon head and a 30mm overall length measured from beneath the head. Its fully threaded shank is suitable for fastening components in engineering, equipment assembly and maintenance applications.
An M4 A2 Stainless Steel Hexagon Head Set Screw is a metric fastener with a nominal thread diameter of 4mm and a six-sided head designed for tightening with a suitable spanner or socket. The external hexagon head provides accessible drive surfaces for assembly and maintenance.
The set screw is made from A2 stainless steel, commonly associated with grade 304 stainless steel. This material provides good resistance to corrosion in many general-purpose environments, making it suitable for a range of engineering, equipment assembly and maintenance applications.
The DIN 933 design features a fully threaded shank. The thread extends along the length beneath the head, allowing it to engage with a compatible nut or threaded component. This configuration should be matched to the requirements of the assembly.
M4 A2 stainless steel hexagon head set screws are used in engineering, machinery assembly, equipment manufacture and general maintenance. They provide a bolted connection for compatible components where metric fasteners are specified.
The 30mm length is suitable for applications where a fastener of this reach is needed to secure components or pass through an assembly. The correct length depends on component thickness, washer arrangement, the nut or threaded component and the thread engagement required.
A2 stainless steel offers good corrosion resistance for many general indoor and outdoor environments. For marine locations, high-chloride conditions or exposure to aggressive chemicals, the material should be checked carefully and a different stainless steel grade may be necessary.
Use compatible M4 nuts or threaded components where required, and confirm that the complete fastening arrangement is appropriate for the loads and conditions of the finished assembly.
DIN 933: Specifies hexagon head screws with a fully threaded shank. ISO 4017 is the corresponding modern international standard commonly used for this type of fastener. Check dimensions and requirements when replacing an existing screw.
Thread specification: M4 coarse metric thread with a standard pitch of 0.7mm.
Material: A2 stainless steel, commonly associated with grade 304 stainless steel. It offers good general corrosion resistance, although environmental conditions and application requirements must be considered.
Head dimensions: A standard M4 hexagon head normally has a 7mm width across flats and a nominal head height of 2.8mm.
What does M4 mean on this set screw?
M4 indicates a nominal metric thread diameter of 4mm. The standard coarse thread pitch for M4 is 0.7mm.
Is this M4 × 30mm set screw fully threaded?
Yes. DIN 933 set screws have a fully threaded shank, with the thread extending along the length beneath the head.
What size spanner is required for an M4 hexagon head set screw?
A standard M4 hexagon head normally uses a 7mm spanner or socket.
Is A2 stainless steel suitable for outdoor use?
A2 stainless steel is suitable for many outdoor applications, but highly corrosive, marine or high-chloride environments may require a different material grade.
How do I select the correct length for my assembly?
Measure the combined thickness of the components and allow for any washers and the required thread engagement. Check that the 30mm length provides a suitable fixing without interfering with adjacent components.
What is the difference between DIN 933 and ISO 4017?
Both standards cover metric hexagon head screws with fully threaded shanks. Check the required dimensions and specification when replacing an existing fastener.
Specifics
Nominal diameter: 4mm
Overall length: 30mm
Thread length: Fully threaded
Thread type: Metric coarse, fully threaded
Thread pitch: 0.7mm
Head type: Hexagon head
Head width across flats: 7mm nominal
Head height: 2.8mm nominal
Selling unit: Each
Material: A2 stainless steel (304)
Surface finish: Natural stainless steel
SKU: A2HS04030
Installation: Confirm that the M4 × 30mm set screw provides sufficient length and thread engagement for the components being joined. Use a compatible M4 nut or threaded component where required. Tighten using a suitable 7mm spanner or socket and follow the assembly manufacturer's torque requirements. Avoid overtightening and check that the material grade is suitable for the environment in which the fastener will be used.
Delivery Options
TC Fixings Ltd offers a range of delivery services across the UK to suit different order sizes and delivery times. Orders are dispatched using reliable courier and postal services to ensure products arrive quickly and safely.
Delivery Summary
Free delivery: Orders over £30 nett qualify for free delivery
Same-day dispatch: Orders placed before 15:00 Monday–Friday are usually dispatched the same day (subject to stock availability)
Collection: Available from our premises
Local delivery: Free van delivery available in Saffron Walden and surrounding villages
Free Delivery
Orders over £30 nett qualify for free delivery.
If your order is close to the threshold, adding additional items may allow you to qualify for free delivery.
Free delivery applies to standard mainland UK delivery only.
Delivery Charges
Orders under £30 nett are subject to carriage charges. Available delivery options are shown below.
Royal Mail Services (Up to 2kg)
| Service | Delivery Time | Cost |
|---|---|---|
| Royal Mail Standard 48 Tracked | 3–5 working days | £4.99 |
| Royal Mail 24 Tracked (Most Popular) | 1–3 working days | £5.99 |
| Special Delivery by 1pm | Next working day | £14.99 |
| Special Delivery by 9am | Next working day | £49.99 |
Royal Mail services are available for consignments up to 2kg.
Courier Services
| Service | Delivery Time | Cost |
|---|---|---|
| Standard Courier | 2–3 working days | £6.98 |
| Express Delivery (Most Popular) | 1–2 working days | £8.99 |
| Next Working Day by 13:00 | Next working day | £10.99 |
| Next Working Day by 11:00 | Next working day | £14.99 |
| Saturday Delivery | Saturday | £9.98 |
Orders placed before 15:00 Monday–Friday are normally dispatched the same working day, subject to stock availability.
Delivery Surcharges
Additional charges may apply in certain circumstances.
Extended Delivery Areas
Orders to the following locations may incur additional delivery charges:
Isle of Wight
Isle of Man
Scottish Highlands
Scottish Isles
Northern Ireland
Channel Isles
These charges will be shown at checkout where applicable.
Long Item Surcharge
Items measuring 1.1 metres or longer are subject to a £12 length surcharge per shipment.
Dispatch Information
Orders placed before 15:00 Monday–Friday are normally dispatched the same working day when all items are in stock.
Orders placed after this time, or on weekends and bank holidays, will be dispatched on the next working day.
Next working day delivery services apply Monday–Friday excluding bank holidays.
Collection
Customers may collect orders from our premises.
Collection orders are normally ready within 1 hour, provided all items are in stock. Please wait for confirmation before travelling to collect your order.
Local Van Delivery
TC Fixings offers a free local van delivery service to customers in Saffron Walden and surrounding villages.
Please contact our team for further information if you are located in this area.
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Quantity WarningPlease be aware that this product only sold in multiples of 0.
M3 Dia
Length 10mm
SKU: A2HS03010
419 In Stock
£7.18
PER 100
M3 Dia
Length 16mm
SKU: A2HS03016
73 In Stock
£9.94
PER 100
M4 Dia
Length 10mm
SKU: A2HS04010
286 In Stock
£17.28
PER 100
M4 Dia
Length 16mm
SKU: A2HS04016
828 In Stock
£14.58
PER 100
M4 Dia
Length 20mm
SKU: A2HS04020
315 In Stock
£16.85
PER 100
M4 Dia
Length 25mm
SKU: A2HS04025
300 In Stock
£18.47
PER 100
M4 Dia
Length 30mm
SKU: A2HS04030
473 In Stock
£17.28
PER 100
M4 Dia
Length 40mm
SKU: A2HS04040
98 In Stock
£25.06
PER 100
M5 Dia
Length 10mm
SKU: A2HS05010
Out of Stock
£9.94
PER 100
M5 Dia
Length 12mm
SKU: A2HS05012
54 In Stock
£17.60
PER 100
M5 Dia
Length 16mm
SKU: A2HS05016
530 In Stock
£15.23
PER 100
M5 Dia
Length 20mm
SKU: A2HS05020
256 In Stock
£15.88
PER 100
M5 Dia
Length 25mm
SKU: A2HS05025
1309 In Stock
£20.52
PER 100
M5 Dia
Length 30mm
SKU: A2HS05030
Out of Stock
£31.97
PER 100
M5 Dia
Length 40mm
SKU: A2HS05040
23 In Stock
£26.24
PER 100
M5 Dia
Length 50mm
SKU: A2HS05050
112 In Stock
£36.96
PER 100
M5 Dia
Length 60mm
SKU: A2HS05060
3 In Stock
£44.06
PER 100
M5 Dia
Length 70mm
SKU: A2HS05070
Out of Stock
£49.42
PER 100
M5 Dia
Length 80mm
SKU: A2HS05080
Out of Stock
£69.98
PER 100
M5 Dia
Length 100mm
SKU: A2HS05100
67 In Stock
£139.20
PER 100
M6 Dia
Length 8mm
SKU: A2HS06008
437 In Stock
£17.88
PER 100
M6 Dia
Length 10mm
SKU: A2HS06010
944 In Stock
£20.74
PER 100
M6 Dia
Length 12mm
SKU: A2HS06012
168 In Stock
£20.92
PER 100
M6 Dia
Length 16mm
SKU: A2HS06016
8223 In Stock
£21.84
PER 100
M6 Dia
Length 20mm
SKU: A2HS06020
117 In Stock
£21.48
PER 100
M6 Dia
Length 25mm
SKU: A2HS06025
739 In Stock
£26.80
PER 100
M6 Dia
Length 30mm
SKU: A2HS06030
1079 In Stock
£32.09
PER 100
M6 Dia
Length 35mm
SKU: A2HS06035
4585 In Stock
£34.02
PER 100
M6 Dia
Length 40mm
SKU: A2HS06040
703 In Stock
£32.83
PER 100
M6 Dia
Length 45mm
SKU: A2HS06045
748 In Stock
£33.60
PER 100
M6 Dia
Length 50mm
SKU: A2HS06050
1748 In Stock
£34.80
PER 100
M6 Dia
Length 55mm
SKU: A2HS06055
469 In Stock
£38.40
PER 100
M6 Dia
Length 60mm
SKU: A2HS06060
224 In Stock
£63.18
PER 100
M6 Dia
Length 70mm
SKU: A2HS06070
275 In Stock
£48.24
PER 100
M6 Dia
Length 75mm
SKU: A2HS06075
66 In Stock
£52.80
PER 100
M6 Dia
Length 80mm
SKU: A2HS06080
6534 In Stock
£56.84
PER 100
M6 Dia
Length 90mm
SKU: A2HS06090
199 In Stock
£78.24
PER 100
M6 Dia
Length 100mm
SKU: A2HS06100
157 In Stock
£62.69
PER 100
M6 Dia
Length 120mm
SKU: A2HS06120
23 In Stock
£94.85
PER 100
M8 Dia
Length 10mm
SKU: A2HS08010
281 In Stock
£31.80
PER 100
M8 Dia
Length 12mm
SKU: A2HS08012
391 In Stock
£33.00
PER 100
M8 Dia
Length 16mm
SKU: A2HS08016
192 In Stock
£39.90
PER 100
M8 Dia
Length 20mm
SKU: A2HS08020
3299 In Stock
£42.84
PER 100
M8 Dia
Length 25mm
SKU: A2HS08025
2451 In Stock
£51.84
PER 100
M8 Dia
Length 30mm
SKU: A2HS08030
4068 In Stock
£48.13
PER 100
M8 Dia
Length 35mm
SKU: A2HS08035
638 In Stock
£52.67
PER 100
M8 Dia
Length 40mm
SKU: A2HS08040
543 In Stock
£57.22
PER 100
M8 Dia
Length 50mm
SKU: A2HS08050
180 In Stock
£60.29
PER 100
M8 Dia
Length 60mm
SKU: A2HS08060
867 In Stock
£81.89
PER 100
M8 Dia
Length 70mm
SKU: A2HS08070
107 In Stock
£128.52
PER 100
M8 Dia
Length 80mm
SKU: A2HS08080
41 In Stock
£129.36
PER 100
M8 Dia
Length 90mm
SKU: A2HS08090
47 In Stock
£119.52
PER 100
M8 Dia
Length 100mm
SKU: A2HS08100
127 In Stock
£129.41
PER 100
M8 Dia
Length 110mm
SKU: A2HS08110
49 In Stock
£177.16
PER 100
M10 Dia
Length 12mm
SKU: A2HS10012
100 In Stock
£41.03
PER 100
M10 Dia
Length 20mm
SKU: A2HS10020
27 In Stock
£26.67
PER 100
M10 Dia
Length 25mm
SKU: A2HS10025
1266 In Stock
£44.52
PER 100
M10 Dia
Length 30mm
SKU: A2HS10030
2961 In Stock
£42.84
PER 100
M10 Dia
Length 40mm
SKU: A2HS10040
2581 In Stock
£46.20
PER 100
M10 Dia
Length 50mm
SKU: A2HS10050
281 In Stock
£58.54
PER 100
M10 Dia
Length 60mm
SKU: A2HS10060
309 In Stock
£59.14
PER 100
M10 Dia
Length 75mm
SKU: A2HS10075
38 In Stock
£67.20
PER 100
M10 Dia
Length 80mm
SKU: A2HS10080
357 In Stock
£84.42
PER 100
M10 Dia
Length 90mm
SKU: A2HS10090
Out of Stock
£68.12
PER 100
M10 Dia
Length 100mm
SKU: A2HS10100
95 In Stock
£109.12
PER 100
M10 Dia
Length 110mm
SKU: A2HS10110
39 In Stock
£125.45
PER 100
M10 Dia
Length 120mm
SKU: A2HS10120
39 In Stock
£93.87
PER 100
M10 Dia
Length 130mm
SKU: A2HS10130
37 In Stock
£105.38
PER 100
M12 Dia
Length 16mm
SKU: A2HS12016
109 In Stock
£44.50
PER 100
M12 Dia
Length 25mm
SKU: A2HS12025
52 In Stock
£41.58
PER 100
M12 Dia
Length 30mm
SKU: A2HS12030
198 In Stock
£50.32
PER 100
M12 Dia
Length 35mm
SKU: A2HS12035
58 In Stock
£47.63
PER 100
M12 Dia
Length 40mm
SKU: A2HS12040
103 In Stock
£58.38
PER 100
M12 Dia
Length 50mm
SKU: A2HS12050
45 In Stock
£76.44
PER 100
M12 Dia
Length 55mm
SKU: A2HS12055
32 In Stock
£83.08
PER 100
M12 Dia
Length 60mm
SKU: A2HS12060
102 In Stock
£69.55
PER 100
M12 Dia
Length 80mm
SKU: A2HS12080
167 In Stock
£105.00
PER 100
M12 Dia
Length 90mm
SKU: A2HS12090
33 In Stock
£143.22
PER 100
M12 Dia
Length 100mm
SKU: A2HS12100
102 In Stock
£139.27
PER 100
M12 Dia
Length 110mm
SKU: A2HS12110
6 In Stock
£1.44
EACH
M12 Dia
Length 140mm
SKU: A2HS12140
14 In Stock
£1.79
EACH
M12 Dia
Length 180mm
SKU: A2HS12180
Out of Stock
£2.37
EACH
M14 Dia
Length 50mm
SKU: A2HS14050
10 In Stock
£155.65
PER 100
M16 Dia
Length 40mm
SKU: A2HS16040
30 In Stock
£169.51
PER 100
M16 Dia
Length 50mm
SKU: A2HS16050
13 In Stock
£214.97
PER 100
M16 Dia
Length 100mm
SKU: A2HS16100
31 In Stock
£226.72
PER 100
M16 Dia
Length 110mm
SKU: A2HS16110
5 In Stock
£244.20
PER 100
M20 Dia
Length 70mm
SKU: A2HS20070
9 In Stock
£355.07
PER 100
M20 Dia
Length 120mm
SKU: A2HS20120
3 In Stock
£367.20
PER 100
M24 Dia
Length 50mm
SKU: A2HS24050
20 In Stock
£324.00
PER 100
