Pair weight helps with carton planning, freight estimates and bulk consistency checks, but it is a poor buying specification on its own. A reliable glove weight specification must lock the shell yarn, knit gauge, coating chemistry, dip coverage, size basis, tolerance, packing method, AQL level and performance target before factories can quote the same glove.
A 42 g Glove Can Hide Three Different Builds
A buyer asking for a 42 g nitrile coated glove is not giving a controlled RFQ. In size 9, that 42 g pair could be a 13 gauge polyester liner with a thin flat nitrile palm, a 15 gauge nylon liner with heavier micro-foam nitrile pickup, or a recycled polyester shell that feels bulky but gives weaker abrasion after EN 388:2016 plus A1:2018 testing. The scale confirms mass only. It does not describe yarn denier, stitch density, cuff length, coating film thickness, thumb crotch coverage or working life. In production, pair weight should be checked after knitting, dipping, oven curing and moisture stabilisation, not straight from a warm dipping line. A normal 13 gauge polyester shell with nitrile palm coating in size 9 may reasonably run at plus or minus 5 percent if the yarn lot, coagulant concentration, compound viscosity and curing recipe are stable. On a 40 g target, that means about 38 to 42 g after the gloves have cooled and settled. A tighter band such as plus or minus 3 percent can be discussed for repeat orders, but it needs an approved sample, fixed material route and stable batch size. If the glove weight specification says only 42 g per pair, the factory can hit that number in ways the buyer may not see at quotation stage: shorten the knitted wrist by 5 mm, use a cheaper polyester yarn, reduce coating at the fingertips, lower coating solids, or leave less protection between thumb and index finger. The spreadsheet still shows 42 g. The worker notices when carton edges, cable ties, stamped parts or rebar ties wear through the high-contact areas first.
Why Weight-Based RFQs Create False Savings
The cheapest way to hit a gram target is often the wrong way to build the glove. A supplier can move from nylon to polyester, change virgin polyester to recycled polyester, reduce spandex in the liner, shorten the cuff, or thin the coating where abrasion is highest while leaving enough compound in the palm centre to pass a random weight check. The carton gross weight looks correct. The glove may still fail earlier during picking, light fabrication, warehouse loading or assembly work. This matters more for dipped gloves than for many sewn leather gloves because coating pickup can be a large share of the final pair weight. A flat PU palm on a 13 gauge nylon liner is normally much lighter than sandy nitrile on the same shell. Latex crinkle is usually heavier again because the raised texture carries more compound. A 45 g latex crinkle glove and a 45 g micro-foam nitrile glove are not interchangeable. They differ in dry grip, oil grip, breathability, odour risk, flexibility and abrasion result under EN 388. False savings show up in claims and logistics. Saving USD 0.015 per pair on 50,000 pairs is USD 750. One rejected lot, one distributor credit note, or one urgent replacement air shipment can cost more than that. Weight belongs in the control sheet; it should not be the design brief.
Start With Construction, Then Use Weight as a Control Point
A usable RFQ starts with construction. A controlled line would read: 13 gauge grey polyester shell, black sandy nitrile palm coating, elastic knitted wrist, sizes 7 to 11, target 38 to 42 g per pair at size 9, EN ISO 21420 general requirements and EN 388:2016 plus A1:2018 test requested. Once these items are fixed, weight becomes a useful production control point. Before that, it is only a loose hint. For cut-resistant gloves, construction must be tighter. A 13 gauge HPPE, glass fibre and spandex liner will not behave like a 13 gauge polyester liner, even if both finish near 60 g per pair after coating. HPPE content, glass fibre, steel fibre, basalt fibre, nylon plating yarn and spandex percentage all affect price, softness, cut result and complaint risk. We do not recommend specifying cut gloves by weight first. Start with the required cut level under EN 388 ISO 13997 TDM or ANSI ISEA 105, then build the liner around the actual hazard. For PU assembly gloves, gauge and liner yarn often matter more than 1 or 2 g on the scale. A 13 gauge white nylon PU palm glove and a 15 gauge nylon PU palm glove can sit close in weight, but the 15 gauge liner gives finer fingertip control and usually takes longer to knit. If the user handles M4 screws, barcode labels, small clips or electronics trays, the PU film, fingertip shape and liner gauge matter more than whether the size 9 pair is 33 g or 35 g.
Lock the Size Basis Before Comparing Weight
Pair weight must be tied to a size. Size 9 is commonly used for sampling and quote comparison because it sits near the middle of many industrial size runs, but size 7 and size 11 do not weigh the same. A size 11 glove has more knitted shell area and more coating pickup than a size 7. If the buyer asks for 40 g per pair without saying size 9, one supplier may quote from a smaller sample and another from a larger one. Those prices are not comparable. Size ratio also affects carton planning. A 10,000 pair order packed 12 pairs per polybag and 120 pairs per export carton needs 84 cartons, with the last carton partly filled unless the order quantity is adjusted to 10,080 pairs. If the order is mostly sizes 10 and 11, gross weight and carton pressure will be higher than a promotion order mainly in sizes 7 and 8. For sea freight, carton cube normally matters more than a few kilograms. For courier samples and air shipments, a 2 to 4 kg difference across several cartons is visible on the freight bill. Typical dipped glove cartons for 120 pairs often sit around 50 to 60 cm in length, depending on cuff length, coating type and packing compression. Heavy latex crinkle gloves, acrylic thermal liner gloves and double-dipped nitrile gloves may need 60 or 72 pairs per carton to avoid crushed cuffs and marked coating surfaces. We will not promise final carton quantity until the size set and packing method are approved. Gloves compressed for 30 to 45 days at sea do not always recover cleanly.
Specify the Coating Process, Not Only Nitrile or PU
Nitrile is not one coating. Flat nitrile, foam nitrile, sandy nitrile, micro-foam nitrile and double-dipped nitrile carry different coating weights and cost structures. A double-dipped glove with a smooth nitrile first layer and sandy nitrile palm finish can suit oily sheet metal or light fabrication, but it is not in the same price class as a single foam nitrile palm glove used for warehouse picking. The RFQ should state palm dipped, three-quarter dipped or fully dipped, and whether the thumb is fully coated. In production, coating pickup is controlled by compound viscosity, coagulant concentration, dipping depth, withdrawal speed, dwell time and oven curing temperature. These are process settings, not cosmetic details. If the approved sample has strong thumb crotch coverage but bulk production is dipped 5 mm shallower to save compound, the first complaint usually comes from workers handling cartons, rebar ties or stamped parts. A scale may not catch the lost coverage if the palm centre remains heavy. Inspection should cover coating edge, fingertip coverage, thumb crotch, pinholes, stains, cuff elasticity, size marks and packing count. If the agreed inspection level is AQL 2.5 for major defects and AQL 4.0 for minor defects under ISO 2859-1 sampling, weight is only one checkpoint. It does not replace defect classification or a wear-related performance test.
Use EN and ANSI Results to Confirm Performance
Performance standards should sit beside the construction spec. EN ISO 21420 covers general glove requirements such as sizing, dexterity, pH and innocuousness. EN 388:2016 plus A1:2018 reports abrasion, blade cut, tear, puncture, ISO 13997 TDM cut and optional impact where applicable. ANSI ISEA 105 is commonly used for North American cut and abrasion references. These standards do not tell the factory which yarn or coating to use, but they help confirm whether the finished build is suitable for the work. A glove can become heavier and still perform worse. Extra nitrile thickness may improve abrasion but reduce dexterity and breathability. Adding HPPE, glass fibre or steel fibre may improve cut result, but it changes hand feel, washing behaviour and long-shift comfort. Glass fibre blends can feel harsher for some users in warm warehouses. For packaging work with light carton cuts, EN 388 abrasion and tear may matter more than chasing a high cut level. For stamped metal blanks, TDM cut and thumb crotch wear should be considered together. We do not claim a CE result for a changed yarn, changed coating, changed gauge or changed cuff construction unless that exact construction has valid documentation. A 2 g weight change may look small, but if it comes from a different liner or coating system, the old report may no longer describe the glove being shipped.
Write the RFQ So Factories Quote the Same Glove
A workable RFQ line is short but controlled: 13 gauge grey polyester shell, black foam nitrile palm, elastic knitted wrist, sizes 7 to 11, target 38 to 42 g per pair at size 9, EN ISO 21420 and EN 388:2016 plus A1:2018 test requested, packed 12 pairs per polybag and 120 pairs per export carton, inspection to AQL 2.5 major and AQL 4.0 minor. Add Incoterms such as FOB Ningbo, FOB Shanghai or EXW Yiwu if you want landed cost comparison to be clean. This makes factories quote the same glove instead of guessing how to reach one weight. For private label orders, approve the glove construction before artwork, barcode labels and carton marks are locked. A typical OEM dipped glove MOQ is often 3,000 to 10,000 pairs per colour and coating, depending on yarn availability, coating colour, logo method and packing. Lead time is commonly 4 to 7 weeks after sample approval and deposit when yarn is available. HPPE blends, aramid, acrylic thermal liners, TPR impact parts or uncommon coating colours can add time before bulk knitting starts. For price comparison, ask suppliers to state whether the quote is EXW, FOB or CIF, and whether export cartons, hang tags, barcode stickers and inner polybags are included. We do not treat every gram target as practical. A good glove weight specification protects the buyer, the factory and the worker using the glove.
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