JCP Throughbolts, A2 Stainless Steel

M6 - M20 (40 - 220mm) A2-304 stainless steel

We supply JCP A2-304 stainless steel throughbolts from M6 to M20 in lengths from 40mm to 220mm, for external fixings into non-cracked concrete C20/25 to C50/60. A2 resists atmospheric corrosion well; for marine or chemically aggressive environments, or where an ETA is specified, use the A4 stainless ranges.

Also known as: stainless throughbolt, a2 throughbolt, stainless steel through bolt.

A2 stainless throughbolt dimensions

Thread size	Order code	Drill diameter (d0)	Length (L)	Thread length	Min hole depth (h1)	Max fixture thickness	Installation torque (Nm)
M6	TSSA206045	6 mm	40 mm	18 mm	35 mm	5 mm	5
M6	TSSA206065	6 mm	65 mm	28 mm	35 mm	25 mm	5
M8	TSSA208050	8 mm	50 mm	14 mm	40 mm	5 mm	15
M8	TSSA208075	8 mm	75 mm	39 mm	45 mm	22 mm	15
M8	TSSA208095	8 mm	95 mm	59 mm	45 mm	42 mm	15
M8	TSSA208120	8 mm	120 mm	62 mm	45 mm	67 mm	15
M10	TSSA210060	10 mm	60 mm	18 mm	45 mm	5 mm	25
M10	TSSA210080	10 mm	80 mm	38 mm	55 mm	15 mm	25
M10	TSSA210100	10 mm	100 mm	57 mm	55 mm	35 mm	25
M10	TSSA210125	10 mm	125 mm	82 mm	55 mm	60 mm	25
M10	TSSA210150	10 mm	150 mm	76 mm	55 mm	85 mm	25
M10	TSSA210175	10 mm	175 mm	86 mm	55 mm	110 mm	25
M12	TSSA212085	12 mm	85 mm	38 mm	65 mm	5 mm	45
M12	TSSA212100	12 mm	100 mm	58 mm	65 mm	20 mm	45
M12	TSSA212115	12 mm	115 mm	57 mm	65 mm	35 mm	45
M12	TSSA212145	12 mm	145 mm	78 mm	65 mm	65 mm	45
M12	TSSA212200	12 mm	200 mm	84 mm	65 mm	120 mm	45
M16	TSSA216110	16 mm	110 mm	47 mm	85 mm	12 mm	90
M16	TSSA216125	16 mm	125 mm	60 mm	85 mm	27 mm	90
M16	TSSA216150	16 mm	150 mm	87 mm	85 mm	52 mm	90
M16	TSSA216175	16 mm	175 mm	80 mm	85 mm	77 mm	90
M20	TSSA220170	20 mm	170 mm	80 mm	100 mm	58 mm	160
M20	TSSA220220	20 mm	220 mm	113 mm	100 mm	108 mm	160

Materials & strength

Material & finish

A2-304 stainless steel, plain finish. Suitable for external use.

Related specifications

ETA Option 1 A4 stainless throughbolt ETA Option 7 A4 stainless throughbolt Zinc plated throughbolt

Frequently asked

A2 or A4 - which stainless throughbolt do I need?

A2-304 suits general external use. A4-316 adds molybdenum for chloride resistance, so coastal, marine and de-icing-salt environments normally call for A4 - and JCP's A4 ranges also carry ETA Option 1 or Option 7 assessments where the specification requires one. For swimming pool atmospheres, stainless grade selection is safety-critical due to chloride stress corrosion - send us the application.

Do stainless throughbolts install differently?

No - the drill diameter still matches the anchor diameter and the same torque-controlled expansion applies. Take care to keep carbon-steel contamination off stainless fixings during installation to preserve corrosion resistance.

Need A2 stainless steel throughbolt in a non-standard size or material?

Send us your drawing — specials quoted within 24 hours.

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