Grover Stitching Wire – Gayathri Machinery

The Grover Range

15 sizes. Every application.

From thin exercise notebooks to thick product catalogs — the right wire for every job.

∅ 1.20 mm · 114 m/kg

Thick hardcover-style directories, oversized reference books, and multi-section commercial booklets with high page counts.

Heavy Duty

∅ 1.00 mm · 164 m/kg

Large format reference catalogs and multi-section publications where durability through repeated handling is essential.

Heavy DutyExport

∅ 0.90 mm · 202 m/kg

Textbooks, thick cheque books, product manuals, and lottery booklets — applications requiring a firm and precise staple.

Heavy Duty

20.5

∅ 0.85 mm · 227 m/kg

Textbooks and thick cheque books where a slightly finer wire is preferred without compromising on staple integrity.

Heavy DutyExport

∅ 0.80 mm · 256 m/kg

Product manuals, training booklets, and mid-weight textbooks. A reliable workhorse for commercial print binderies.

StandardExport

21.5

∅ 0.75 mm · 291 m/kg

Lottery booklets, regulatory documents, and textbooks where consistent staple formation is critical at volume.

Standard

∅ 0.70 mm · 334 m/kg

Thick cheque books, product manuals, and instructional booklets with moderate page counts.

Standard

22.5

∅ 0.68 mm · 354 m/kg

Textbooks with lighter pagination and educational workbooks. Bridges the standard and light categories.

StandardExport

∅ 0.65 mm · 384 m/kg

Thinner textbooks, cheque books, and product manuals requiring a clean, flush staple at moderate page thickness.

Light

23.5

∅ 0.63 mm · 412 m/kg

Thin exercise booklets, light commercial stationery, and short-run printed booklets for general distribution.

Light

∅ 0.60 mm · 455 m/kg

The most widely used size among commercial printers — ideal for catalogs, brochures, and cheque books across all machine types.

LightExport

24.5

∅ 0.57 mm · 504 m/kg

Fine-gauge wire for lightweight catalogs and brochures where a discreet staple profile is preferred.

Security

∅ 0.55 mm · 541 m/kg

Specifically designed for high-speed saddle binders — compatible with Muller Martini, Hohner, Heidelberg, and Osako machines.

SecurityExport

25.5

∅ 0.52 mm · 605 m/kg

Used in notebook manufacturing on Hohner stitching heads fitted to book binding machines. Precise, consistent staple formation at high speed.

Special Use

∅ 0.50 mm · 655 m/kg

Thin books, brochures, and catalogs requiring a fine, precise staple. The lightest wire in the Grover range.

Special UseExport

* All Grover wire sizes are ROHS certified. Wire names are industry standard. Sizes shown are nominal diameters. Contact us to confirm specifications for your application.

Packaging

Four spool formats. One consistent wire.

All Grover wire is available across four spool configurations — choose the format that best fits your machine and production volume.

GI125
product shot

GI 125

Our smallest spool format, ideal for short runs and sampling. Standard fill of 2 kg; also available in 1.6 kg and 1.75 kg on request.

Standard: 2 kg · Also: 1.6, 1.75 kg

GI200
product shot

GI 200

Mid-size spool suited for light-to-medium production volumes. Standard fill of 4.5 kg for consistent machine feeding.

Standard: 4.5 kg

GI300
product shot

GI 300

Our most versatile spool — standard fill of 15 kg with flexible options for various production runs. Available in 7.5, 10, and 13 kg on request.

Standard: 15 kg · Also: 7.5, 10, 13 kg

GI355
product shot

GI 355

Our largest spool format for high-volume production environments. Standard fill of 40 kg — fewer changeovers, maximum uptime.

Standard: 40 kg

close-up — wire cross-section /
quality inspection process

Why Grover

What makes every spool different.

±0.01mm Geometric Precision

Industry-leading roundness tolerance ensures smooth machine performance and measurably reduces maintenance downtime across all gauges.

Rust-Free Coating

Advanced coating process eliminates the #1 cause of rejected print products. Guaranteed on every spool, across every gauge in the range.

ROHS Certified

Certified compliant for use in food, medical, and safety-critical applications. The preferred choice for export-focused manufacturers in 30+ countries.

India's Widest Range

15 gauges mean one supplier for every binding need — from the lightest exercise book to the heaviest product catalog. Fewer vendors, simpler procurement.

Specifications

Full specification reference.

Wire No.	Size (mm)	Length / kg (m)	Typical Application	Category
18	1.20	114	Thick directories, multi-section reference books	Heavy
19	1.00	164	Large format catalogs, high page-count publications	Heavy
20	0.90	202	Textbooks, thick cheque books, product manuals, lottery booklets	Heavy
20.5	0.85	227	Textbooks, thick cheque books — finer staple profile	Heavy
21	0.80	256	Product manuals, training booklets, mid-weight textbooks	Standard
21.5	0.75	291	Lottery booklets, regulatory docs, textbooks	Standard
22	0.70	334	Thick cheque books, product manuals, instructional booklets	Standard
22.5	0.68	354	Lighter textbooks, educational workbooks	Standard
23	0.65	384	Thinner textbooks, cheque books, light product manuals	Light
23.5	0.63	412	Thin exercise booklets, light commercial stationery	Light
24	0.60	455	Catalogs, brochures, cheque books — most widely used	Light
24.5	0.57	504	Lightweight catalogs, brochures, discreet staple profile	Light
25	0.55	541	Saddle binders — Muller Martini, Hohner, Heidelberg, Osako	Saddle
25.5	0.52	605	Notebook manufacturing on Hohner stitching heads	Notebook
26	0.50	655	Thin books, brochures, catalogs	Special

Precision wire,
every gauge.

15 sizes. Every application.

Four spool formats. One consistent wire.

What makes every spool different.

Full specification reference.

Need the right wire for your machine?

Precision wire,every gauge.

15 sizes. Every application.

Four spool formats. One consistent wire.

What makes every spool different.

Full specification reference.

Need the right wire for your machine?

Precision wire,
every gauge.