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We at Rollfast manufacture speciality fasteners in many grades in stailess steel and alloy steel.Our expertise over the years has resulted in us providing material in shorter delivery times as per customers drawings or prototype samples.
We have a long standing tradtion of providing uncompromised quality fasteners, we relentlessly conduct series of quality checks like UTS testing, profile checks, destructive and all other kinds of non destructive testings.
Materials : Stainless Steel, AISI 202, 304 & 316
Threads : METRIC, BSW, BSF, UNC, UNFm AS REQUIRED
Size Thread : M3 to M20, 1/8" to 3/4"
Length Range : 8 mm to 150 mm, 3/8" to 6"
Standard : DIN, ISO, IS, BS, ANSI
We are committed to satisfy the needs and expansions of our customer by manufacturing and supplying Alloy Steel & Stailess Steel Fasteners of stated quality, timely delivery and reliable services at all times.
We strive for continuos improvements throught productivity and employee participation.We make sure each and every product face rigorous inspection stages during production process before they make it to the box, ready for shipment. The management shall promote Quality at all levels through execution of the quality management system complying to ISO 9001 : 2008 Standard.
We always aim to give zero defect products to our customers. Every Products is certified after final inspection and packaging for its conformance against specified international standards or customers specific requirements. We always belive in continuos improvement in our products keeping in view of customers requirement.
Note :
• Special Stainless Steel Grade Available on request
• We can develop product as per customers specification / drawing
• All austenitic stainless steel fasteners are normally non-magnetic; after cold working, some magnetic properties may be evedent please ref: ISO 3506-1 standard
• Material test certificate is provided as per the EN 10204 : 3, 1B/3.1 stadard
• PMPL - hot forged stainless steel and high tensile bolts and sockets in grades 8.8, 10.9 and 12.9, SS 304, SS 202, SS 316 L, 316S31, 316S33, A2 & A4, ASTM Grades B8m B8M in class 1 and Class 2
Chemical Composition
| Grade | Material Similar to.. | C Max | MN Max | P Max | S Max | SI Max | CR | NI | MO |
| A2 / B8 | AISI 304 | 0.08 | 2.00 | 0.05 | 0.030 | 1.00 | 17.00 - 20.00 | 8.0 - 13.0 | - |
| A4 / B8M | AISI 314 | 0.08 | 2.00 | 0.05 | 0.030 | 1.00 | 16.00 - 18.50 | 10.0 - 14.4 | 2.00 - 3.00 |
Physical Composition
| Grade | Standard | Property Class | Tensile Strength Min.(N / mm2) | Yield Strength 0.2% offset Min. (N / mm2) |
Elongation After Fracture AL mm Min. |
| A2 & A4 | ISO 3506 | 70 | 700 | 450 | 0.4d |
| 80 | 800 | 600 | 0.3 |
| Grade | Standard | Property Class | Diameter Inch. | Tensile Strength MIin.(KSI) | Yield Strength 0.2% Offset Min.(KSI) | Elongation in 4D Min. % | Reduction of Area Min % | Hardness (Max.) Rockwell |
| B8 | ASTM A193 / A193M |
Class 1 | All | 75 | 30 | 30 | 50 | B96 |
| Class 2 | To 3/4 | 125 | 100 | 12 | 35 | C35 | ||
| B8M | Class 1 | Over 3/4 to 1 |
115 | 80 | 15 | 35 | C35 | |
| All | 75 | 30 | 30 | 50 | B96 | |||
| Class 2 | To 3/4 | 110 | 96 | 15 | 15 | C35 | ||
| Over 3/4 to 1 |
100 | 80 | 20 | 45 | C35 |
Torsional Strength as per ISO 3506
| Thread | ST 2.2 | ST2.6 | ST2.9 | ST3.3 | ST3.5 | ST3.9 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | ST 8 |
| Min.Torsional Strength NM | 0.45 | 0.9 | 1.5 | 2 | 2.7 | 3.4 | 4.4 | 6.3 | 10 | 13.6 | 30.5 |
For Austenitic Bolts and Screws M1.6 to M1.6 to M1.6 (Coarse Thread)
| Grade | Standard | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M16 | |
| Min.Breaking Torque, MB Min.NM | Property Class | 70 | 0.20 | 0.4 | 0.9 | 1.6 | 3.8 | 7.8 | 13 | 32 | 65 | 110 | 290 |
| 80 | 0.24 | 0.48 | 0.96 | 1.8 | 4.3 | 8.8 | 15 | 37 | 74 | 130 | 330 |
We believe in the mantra of Do it fast, Do it Right, and it cost-effective and thats what has given us the strength to be one of the distinguished manufacturers of ally steel & stainless steel cold forged fasteners (Bolts, Nuts, Screws, Threaded Rods, Nails & U-Bolts).
Our modernized well-equipped manufacturing unit, expert technicians, well-trained manpower and dedicated sales support have over the years reinforced us to move forward, and as a result we are not only able to cater to the Indian market but also export our fasteners to the International market.
Parmar Industries
Gat No. 13 & 20, Sahajpur Industrial Area,
B/h. Perfect Engine Component,
Village-Sahajpur,
Pune-Solapur Road, Near Uruli Kanchan,
Pune - 412202 Maharashtra, India.
Tel. No. : +91 - 2119 - 242041
Mobile : +91 - 93712 32231, 77740 13595
